| 词汇 | against a rainy day |
| 释义 | against a rainy day in anticipation of, and as a provision for, some event that is expected to occur in the future 未雨绸缪；以备不时之需 * We must save up some money against a rainy day. 我们必须积蓄一些钱以备不时之需。 |
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