| 词条 | retention |
| 释义 | retention 保持力 英英解释: 名词retention: 1. the act of retaining something 同义词：keeping, holding 2. the power of retaining and recalling past experience 同义词：memory, retentiveness, retentivity 3. the power of retaining liquid 同义词：retentiveness, retentivity |
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