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on the two sides 兩邊

on the whole 整體上

on time 準(zhǔn)時(shí)、按時(shí)

once a while 有時(shí)、偶爾

once again 再次、又一次

once in a while 偶爾、有時(shí)

once more 再次、又一次

once upon a time 很久以前

one after another 一個(gè)接一個(gè)

one and a half years 一年半

one another 互相、彼此

one day 某一天

one person in ten 十個(gè)人中有一個(gè)

one person out of ten 十個(gè)人中有一個(gè)

one such+n. 這樣一個(gè)……(名詞用單數(shù))

one's attitude to/towards sth. 某人對(duì)……的態(tài)度

one-sided view 片面的看法

only to find 結(jié)果卻發(fā)現(xiàn)

only/but/all too pleased/happy/thankful to do 做……太高興/感謝了

operate on sb. 給某人做手術(shù)

operation on sp. 在某位置動(dòng)手術(shù)

opposite direction 相反方向

or rather 或者說(shuō)、更進(jìn)一步說(shuō)

order (that) sb. (should) do 命令某人應(yīng)該做某事(虛擬語(yǔ)氣)

ought not to have done 不應(yīng)該做(卻做了)

ought to have done 應(yīng)該做(卻沒(méi)做)

out of breath 上氣不接下氣

out of one's reach 夠不著

out of order 壞了、無(wú)秩序、亂放

out of the reach of sb. 某人夠不到

over and over again 一次又一次、再三

over the radio 從收音機(jī)里

over the years 這幾年里

owe one's success to sb. 把某人的成功歸功于別人

owe one's thanks to sb. 感謝某人

owe sb. sth. 欠某人某物

owe sth. to sb. 把……歸于……

pass away 病故、病逝

pass down 繼承、傳下去

pass on a message to sb. 給(收信人)留/傳個(gè)信

pass on 傳遞

pass the exam 考試及格

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