track and hold
[网络] 跟踪与保持；跟踪和持有
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- led abbr. 发光二极管（light-emitting diode）
- pgce abbr. =Postgraduate Certificate of Education 研究生毕业证书；Post-Graduate Certificate of Education 教育学研究生证书
- foe n. 敌人；反对者；危害物
- mossy adj. 生苔的，被苔覆盖的；青苔状的
- plainer 等于complainer n. (Plainer)人名；(德、捷)普莱纳
- strengthening n. 加强；加固；加固件 v. 强化；加固（strengthen的ing形式）
- satsuma n. 无核小蜜橘 n. (Satsuma)人名；(日)萨摩(姓)
- salvadorean a. 萨尔瓦多(El Salvador)的
- nether adj. 下面的，下方的；地下的，下界的
- interstitial n. 填隙原子；节间 n. 插屏广告 adj. 间质的；空隙的；填隙的
- rotenone n. [农药] 鱼藤酮（一种治疥疮的药）
- lulling vt. 使平静；使安静；哄骗 vi. 平息；减弱；停止 n. 间歇；暂停；暂时平静 n. (Lull)人名；(英)勒尔
- gyroscope n. 陀螺仪；[航] 回转仪
- gallows n. 绞刑；绞刑架；承梁
- Billingsley [人名] [英格兰人姓氏] 比林斯利住所名称，来源于古英语，含义是可能是“剑形山附近的开垦地”(clearing near a swordshaped hill); [地名] [英国] 比灵斯利
- buoyancy n. 浮力；轻快；轻松的心情；（股票）保持高价或回升
- fundraiser n. 资金筹集人；资金筹集活动
- listening adj. 收听的；助听的 n. 倾听 v. 听（listen的ing形式）
- crossly adv. 横地；故意为难地；相反地；发怒地
- heartwood n. （树木的）心材
考试词汇表
- over cut, excessive felling
- over temperature controller
- over the counter analgesics
- over the counter securities
- over the hills and far away
- over the length and breadth
- over-current discrimination
- over-the-counter analgesics
- over-the-counter derivative
- over-the-counter securities
- over-the-roadway extraction
- overaccumulation of capital
- overall balance of payments
- overall budgetary operation
- overall combiand feed ratio
- overall combined feed ratio
- overall counting efficiency
- overall economic efficiency
- overall harmonic distortion
- overall output per manshift
