| 词汇 | 以内 |
| 释义 | 以内以内[yǐ nèi]1.■within; within the limits of; including; less than:长城以内within the Great Wall;在3天以内within three days;限制在50人以内within the limits of fifty people;这种药3年以内有效。This medicine is effective if used within three years. |
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