| 词汇 | up and down |
| 释义 | Idiom The boat bobbed up and down on the water. 小船在水面颠簸。 She was pacing up and down in front of her desk. 她在办公桌前踱来踱去。 My relationship with him was up and down. 我跟他的关系忽冷忽热。 |
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