| 正面 | 6637.retention 英 [rɪ'tenʃ(ə)n]美 [rɪ'tɛnʃən]     |
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| 背面 |     释义： 1. re- "back" + tent- + -ion.2. => hold back, keep back.3. => continue keeping, keep possession of, keep in the mind.n. 保留；扣留，滞留；记忆力；闭尿 例句： 1. He argues strongly for retention of NATO as a guarantee of peace.他强烈要求保留北大西洋公约组织以维护和平。 retention 保持，保留，记忆力来自 retain,保持，-ion,名词后缀。引申词义记忆力。 retention (n.)late 14c., from Latin retentionem (nominative retentio) "a retaining, a holding back," noun of action from past participle stem of retinere (see retain). Originally medical; mental sense is from late 15c." |