overcoat [ over-=over 在…之上；coat n. 上衣→]n. a coat worn over the regular clothing in cold weather 大衣 / It's cold outside，you'd better put on your overcoat. 外面很冷，你最好穿上大衣。
overman [ over- = above 在…之上；man n. 工人=>“a man above others在其他人之上的工人”→] n. foreman or overseer 工头, 监工 / This sparking has been observed by workmen and overmen. 这冒火花现象工人和工头都看到了。
overfreight [over- = too much 过多；freight n. 运输的货物→] n. too much freight on board 超载 / Overfreight is prohibited. 超载是不允许的。
overpopulation [ over- = to much 过多;population n. 人口→] n. too great a population 人口过剩 / Overpopulation affects many other needs of mankind besides food. 除了食物之外，人口过剩还影响到人类的许多其他需求。
最后介绍over-跟动词缀合的几个实例。
overflow [ over- = over 高于;flow v. 流→]v. flow over the bounds 溢出；泛滥 / Rivers often overflow in spring.春天河水 经常泛滥。
overflowing a. 溢出的；过剩的
overfly [ over- = over 在…上方;fly v. 飞行→]v. fly over (the territory of a country)飞行在（某国的）上空 / The U-2 has been overflying Russia. U-2侦察飞机一直在俄罗斯上空飞行。
overdo [ over- = too much 过多；do 做→]v. do too much or attempt to do too much 把…做得过头/ Show some politeness to him, but don't overdo it. 对他应有礼貌，但不要做得过分。
overestimate [ over- = too much 过分；estimate v. 估计→ ] v. estimate at too high a value 过高估计 / Men often overestimated their capacity for evil.人们往往过高估计自己对付邪恶的能力。
overestimation n. 过高估计
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