| 字词 | 一旦 |
| 释义 | 一旦 yī dàn （一天之间） in a single day; in a very short time: 毁于一旦 be destroyed in one day; 溃于一旦 collapse overnight （不确定的时间） once; in case; now that: 一旦时机成熟 Once the time is ripe...; 一旦失去信心， 就甭想做好工作。 If (When) one loses confidence, he can never expect to do his work well. 一旦抓住了主要矛盾， 一切问题就迎刃而解。 Once the principal contradiction is grasped, all problems will be readily solved. |
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