?/sac n. 囊/sack n. 袋子/saddle n. 马鞍/saguaro n. 树形仙人掌/salinity n. 盐分；咸度/salmon n. 鲑/sample n. 抽样；样本/sanction n. 约束力；认可，许可，制裁/sanitation n. 卫生；卫生设备/save prep. 除...之外/scale n. 鳞/scan vt. 校验/scar vt. 使有疤痕/scarce a. 不足的/scatter vt. 散播；撒布，分布/scavenge vt. (动物)以(腐肉或垃圾)为食/scavenger n. 食腐动物；拾荒者/scenic a. 风景优美的/schedule n. 安排；排定/scheme n. 计划，方案/school n. 鱼群；同类水生动物群/scold vt. 责骂/score n. 乐曲，总谱/scour vt. 冰川侵蚀；冰刷/scout n. 侦察者/scrap n. 碎片/scraping n. (常用复数)碎屑/scratch vt. 划破；擦伤/scrupulously ad. 一丝不敬地；严谨地/sculpture n. 雕刻/seal n. 海豹/sear vi. 灼热，烧焦/seasonal a. 季节性的/seat n. 职位/seclude vt. 使隔绝/seclusion n. 隐居；隐退/second n. 秒/second-grade 二年级/secrecy n. 保密/secrete vt. 分泌/secretin n. 分泌素/sect n. 教派/secure vt. 获得；使安全(可靠)/security n. 安全/sediment n. 沉积物/sedimentation n. 沉淀，沉积/seduce vt. 迷住；诱惑；勾引/seed n. 种子/seedling n. 籽苗，幼苗/seek vt. 追求/seeker n. 寻求者/seep vi. 渗出/seepage n. 渗出物/segment n. 部分；扇形/selective a. 有选择性的/selenium n. 硒/self-development 自我发展/self-expression 自我表现/self-limiting a. 自我限制的/self-realization 自我实现/self-rule=self-government自治；民主政治/self-sovereignty n. 自主/self-sufficient a. 过于自信的；妄自尊大的；自给自足的/self-taught a. 自学成才的/self-winding a. 自动上发条的/seminar n. 研究班；专题讨论会/Senate n. 参议院/sensational a. 轰动的；惊人的/sensible a. 明智的，合理的/sensitive a. 敏感的/sensitivity n. 繁感性/sensory a. 感觉的/sentimental a. 多愁善感的/sentimentalism n. 感伤主义/sentimentalize vt. 使伤感/sequence n. 顺序，系列；次序/sequester vt. 使分离/sequoia n,. 红杉/set vt. 设定/setting n. 环境；背景/settle vi. 定居/settled a. (性格等的)稳重的；定居的/settlement n. 新拓居地；定居/severe a. 严重的/severely ad. 严重地/sew vi. 缝；干针线活/sewage n. (下水道)污水；污物/sexton n. 教堂司事/shade n. 色度；颜色深浅/shadow n. 阴影/shaft n. 通道，光束；闪光/shale n. 页岩/shallow a. 浅的/shape vt. 使形成；塑造/sheer a. 全然的；纯粹的/shell n. 船壳；壳/shelter n. 住所；避难所/shielding n. 防护罩/ship vt. 运送/shipwreck n. 船遇难(失事)/shortage n. 缺少；不足/shot n. 拍摄/shovel n. 铁锹/show n. 表演/shrill n. 尖声；尖叫/shrimp n. (复数shrimp(s)(小)虾/shrink vi. (过去分词shrunk)收缩/shrub n. 灌木/signal vt. 发信号，n. 信号/signature n. 签名/signify vt. 表示/silhouette vt. 使显出轮郭(或影像)/silica n. 硅石/silicate n. 硅酸盐/siliceous a. (化)硅质的；含硅的/silicon n. 硅/silt n. 淤泥/silverware n. 银餐具；银器/simplicity n. 简单；简易/simultaneously ad. 同时地/sin n. 罪孽/site n. 现场；场地，地方，场所/skeleton n. 骨骼/skeptical a. 怀疑的/skepticism n. 怀疑态度/sketch n. 梗概；素描/skull n. 颅骨/skylight n. 日光/skyrocket vi. 突飞猛进/skyscraper n. 摩天大楼/sledding n. 坐雪橇/slide vi. 滑行/slime n. 黏液/slimy a. 分泌黏液的/slip vi. 逐渐进入，陷入；滑行/slipper n. 便鞋/slope n. 山坡/sloth n. 树懒/slothful a. 懒惰的/sluggishly ad. 懒怠地；缓慢地/slumber n. 睡眠/smelt vt. 熔炼/smite vt. (常用被动语态)深深影响，打动/snout n. 鼻部/snowdrift n. 被风吹成的雪堆/snowflake n. 雪花/soak vt. 浸泡/sociology n. 社会学/sodium n. 钠/softball n. 垒球/solar a. 太阳的/solid a. 固体的；结实的，坚固的/solidarity n. 团结一致/solidify vt. 使固化/solitary a. 独处/solitude n. 单独；寂寞/solution n. 溶解状态/somewhat ad. 有点/sophisticated a. 精密的；复杂的；尖端的/sophistication n. 精密；复杂；尖端/sow vt. 播种/span vi. 跨越/spanking a. 飞快的；了不起/spare a. (风格)不加渲染的；简朴的，vt. 用不着；免去/spark n. 火花，vt. 激发；点燃/spat n. 特蛎卵；幼牡蛎/spawn vt. 产卵/species n. 种类/specify vt. 明确说明/specimen n. 样本；标本/speckle vt. 使弄上斑点；沾污/spectacle n. 景象；壮观；场面/spectacular a. 壮观的/spectator n. 旁观者；观众/spectrum n. 光谱；范围/speculate vt. 推测，认为/speculation n. 投机，推测/speculative a. 投机的/speculator n. 投机商/spherical a. 球形的/spidery a. 蜘蛛似的/spikelike a. 穗状的/spine n. 脊椎/spinet n. 小型拨弦古钢琴/spinster n. 老处女/spiral vi. 不断急剧地上升(或下降)；螺旋形行进/splash vi. 飞溅/splinter vt. 分散；分裂/split vt. 劈开；分开/spoil vt. 弄脏，vi. (食物)变坏/sponge n. 金属绵；海绵/sponsor vt. 发起；资助，为...作保证人/spontaneity n. 自发/spontaneous a. (冲动等)自发的；自然的/spontaneously ad. 自发地/spot vt. 发现/sprawl vi. 蔓延起伏的/spray n. 浪花/spring vi. 反弹；跳/springboard n. 跳板/sprout vi. 发芽；长出/spur n. 踢马刺/spy v. 侦察/square n. 平方/squarely ad. 坚定地；坚实地；直接地/squatter n. 擅自占地者/squeak vi. 尖叫/squeeze vt. 硬塞；用力挤压/stable a. 稳定的/stack n. 堆/staff n. 职员/stage n. 阶段/stagecoach n. 马车/staggering a. 惊人的；摇晃的/stain vt. 玷污，n. 染色；污迹/stalk vt. 跟踪，n. 茎，梗/stand n. 树丛/state vt. 宣布/stately a. 庄严的；雄伟的；堂皇的/statement n. 声明；陈述/stationary a. 静止的，固定的/statistical a. 统计(学)的/statistics n. 统计学/stature n. 高度水平，高度境界；身高，身材/status n. 情形，状态；地位/steady a. 稳定的，稳固的/steam-cylinder n. 蒸汽机汽缸/steamer n. 汽船；轮船/steep a. 陡峭的；大起大落的/steer vi. 操舵；前进；驾驶汽车/stem n. 茎/stench n. 臭气，恶臭/sterile a. 不育的；贫瘠的/stern a. 严厉的/stickpin n. (插入领带等的)装饰别针/stiff a. 坚挺的，硬的/stifle vt. 使窒息；闷住/stilt n. 支撑物；支撑架/stimulate vt. 刺激，引起/sting vt. 刺/stipulate vt. 规定/stir vt. 搅拌/stocky a. 矮胖的/stomach n. 胃/stony a. 石质的；多石的/storage n. 储存；仓库/store vt. 储存/storeroom n. 储藏室/story n. 楼层(同storey)/stout vt. 胖而大的；顽强的/straight a. 直的/straight-grained 直纹的/strain n. 品种；血统，负担；紧张/strap v. 捆扎/strategist n. 战略家/strategy n. 策略/stream n. 溪流。v. 照射；流动/streamline a. 流线型的/strength n. 强点，长处/strenuous a. 费力的；紧张的/stress n. 压力/stretch vi. 延伸/strike vt. 打，击/striking a. 显著的；突出的/string n. 乐音，调/stringent a. 严格的，严厉的/stripe n. 长条；条纹/stubbornness n. 顽固/studio n. 画室/stunning a. 极好的；使人晕倒的/sturdiness n. 坚固；牢实/style n. 风格/stylize vt. 使...风格化/stylized a. 程式化/subject n. 受试者；实验对象，vt. 使遭受；使易受/subjugation n. 屈服/submerge vt. 浸没，淹没/submissiveness n. 顺从/submit vt. 提交；呈送/suborder n. 亚目/subsequent a. 随后的/subsidiary a. 次要的；附属的/subsidy n. 津贴；补助金/subsistence n. 活命；生存/subspecies n. 亚种/substance n. 物质/substantial a. 大量的/substantially ad. 相当地；可观地/substantiate vt. 证实；证明...有根据/substitute n. 代用品；替代物/substractivea a. 减色法的/substrate n. 本源；基础/subtitle n. 副标字幕/subtle a. 微妙的；细微的/subtraction n. 减少；减去/suburb n. 郊区/suburbanization n. 使郊区化/subway n. 地铁/succeed vi. 接续；接连/sufficient a. 足够的/sully vt. 玷污；弄脏/sum n. 数目/summarization n. 概括/summary n. 摘要；总结/sun-baked a. 日晒的/superficial a. 肤浅的/superintendent n. 主管人；监督人/superintendent n. 主管人；校长/superior a. 优良的；卓越的/supernatural a. 超自然的/supervisor n. 监督；主管/supplant vt. 取代/supplement vt. 增补，补充/supplementary a. 补充的；附加的/supply n. 供应/supremacy n. 至高无上，最高地位/surface vi. 出现；露面/surge vi. 激增；波浪般汹涌奔腾/surmount vt. 克服/surpass vt. 超过；胜过/surplus n. 过剩；剩余/surrender vt. 交出；放弃/surrounding n. (常用复数)环境/survive vi. 活下来；幸存/survivor n. 幸存者/suspect vt. 认为，推测；怀疑/suspend vt. 吊；悬挂，中止；停止/suspender n. (裤子的)背带/sustain vt. 支撑/sustain vt. 使持续不息；支撑/swamp n. 沼泽/swampy a. 沼泽地的/swarm n. 一大群/sway vi. 摇摆/sweaty a. 吃力的/sweep n. 猛烈移动/sweeping a. 范围大的；势不可挡的/swelling n. 隆起部/swift a. 迅速的/swing vi. 摆动/swing n. 爵士音乐/switch n. 转辙器/switchyard n. 调车场/syllable n. 音节/symbol n. 象征；标志/symbolic a. 象征的/symbolize vt. 象征/sympathetic a. 有同情心的/symphony n. 交响乐，交响曲/synapse n. 突触/synthetic a. 人工的，合成的/synthetics n. 合成科学
