| 单词 | retention |
| 释义 | retentionretention /rɪˈtɛnʃən/ ●○○ AWL noun [uncountable] 1science the ability or tendency of something to hold liquid, heat, etc. within itself: One of the side effects of the drug is water retention.2formal the act of keeping something: retention of The UN voted for the retention of sanctions against the country.3the ability to keep something in your memory: efforts to improve retention among students |
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