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O |
| 1. on the double 在兩重上 ~~ 儘快
(1) Her mother told her to clean the table on the double.
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| 2. on the rocks 在岩石上 ~~ 手頭拮据
(1) He is on the rocks, so he has to borrow money from the bank.
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| 3. on the wagon 開車 ~~ 戒酒
(1) I'm going on the wagon.
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| 4. on pins and needles 在釘和針之上 ~~ 如坐針氈
(1) Waiting for the result, the young man is on pins and needles.
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| 5. off color 褪色 ~~ 沒精打采
(1) The student has been studying through the night, so he is off color.
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| 6. old boots 舊靴 ~~ 有勢力的人
(1) The chairmen of that organization are old boots.
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| 7. old hat 舊帽子 ~~ 不時髦的人
(1) She is an old hat.
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| 8. once and for all 最後一次 ~~ 一了百了
(1) He gave money to his wife once and for all.
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| 9. once in a way 途中的一次 ~~ 偶然
(1) I met him once in a way.
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| 10. one-armed bandit 獨臂強盜 ~~ 吃角子老虎
(1) The one-armed bandit in the casino is popular to some people.
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| 11. once in a blue moon 幾乎不，很少
(1) I go swimming once in a blue moon.
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| 12. out of the blue 突如其來
(1) He died out of the blue.
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