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490. originate in/from(=begin)起源于,由..引起

489. made to order 定做的(衣服)

488. (be) in order(=acceptable)合適的,恰當(dāng)?shù)?/p>

in order 井井有條,處于良好狀態(tài); out of order(=in bad condition)出毛病,發(fā)生故障

487. be opposite to 與…相反的

486. be opposed to… 反對(duì)…

485. in one’s opinion 按某人的看法

484. be of the opinion 持有…的看法

483. operate on sb. 給某人做手術(shù)

operation n. come/ go into operation開始運(yùn)轉(zhuǎn)put/bring sth. into operation 使…投產(chǎn),運(yùn)轉(zhuǎn)

482. (all) by oneself 獨(dú)自(沒有別人幫助)

481. once and for all =once and forever永遠(yuǎn)地 all at once (=suddenly, now) 立即,馬上

once in a while (=occasionally) 偶爾 (just) for once 就這一次