n. 生产过剩；

n. 推翻，终止，结束( overthrow的名词复数 )；v. 打倒，推翻( overthrow的第三人称单数 )，使终止；

[例句] That government was overthrown in a military coup three years ago.

[例句] ...an attempt to overthrow the president.

v. 使…用药过量( overdose的第三人称单数 )；

[例句] Each year, one in 100 girls aged 15-19 takes an overdose...

[例句] In 1970, guitarist Jimi Hendrix died of a drug overdose.

adv. 不在规定的过程中；

不平稳的，摇摆的；

绝版的；

n. 橘子汁，橘汁，橙汁；

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[例句] The whole system will be fully operational by December 1995.

[例句] The nuclear industry was required to prove that every operational and safety aspect had been fully researched.

abbr. orbital-satellite-carrying amateur radio (OSCAR) （奥斯卡）轨道卫星传播业余电台，潜艇；

一直，始终；有史以来；

n. 有机物( organism的名词复数 )，有机体，生物，有机体系；

[例句] Not all chemicals normally present in living organisms are harmless.

[例句] ...the insect-borne organisms that cause sleeping sickness.

n. 透支，透支额( overdraft的名词复数 )；

[例句] When I left Cambridge I had a £10,000 overdraft...

[例句] Her bank warned that unless she repaid the overdraft she could face legal action.

v. 选择，挑选( opt的现在分词 )；

[例句] Depending on your circumstances you may wish to opt for one method or the other...

[例句] Our students can also opt to stay in residence.

n. 讣告，讣闻( obituary的名词复数 )；

[例句] I read your brother's obituary in the Times.

v. 夸大（某事）( overstate的现在分词 )；

[例句] The authors no doubt overstated their case with a view to catching the public's attention...

[例句] The importance of health education cannot be overstated.

n. 不流行( out的名词复数 )，（尤指某团体或境况中的）无权者；v. 伸出( out的第三人称单数 )，揭露，驱逐，使熄灭；

n. 乐观主义者( optimist的名词复数 )；

[例句] Optimists reckon house prices will move up with inflation this year.

n. 栎树( oak的名词复数 )，橡树，栎木，橡木；

[例句] Many large oaks were felled during the war.

[例句] ...forests of beech, chestnut, and oak.

v. 反对( oppose的第三人称单数 )，使相对，反对（计划、政策等），抵制；

[例句] Mr Taylor was not bitter towards those who had opposed him...

[例句] Many parents oppose bilingual education in schools.

v. 选择，挑选( opt的过去式和过去分词 )；

[例句] Depending on your circumstances you may wish to opt for one method or the other...

[例句] Our students can also opt to stay in residence.