| 词汇 | 必须 |
| 释义 | 必须必须[bì xū]1.■must; have to; be obliged to; necessary:必须指出It must be pointed out that ...;我们必须服从命令。We must obey orders.你必须按时到达那里。You must be there on time.我们必须马上出发。We must start at once. |
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