| retention | |
| 级别 | 第7级 |
| 音标 | [ rɪˈtenʃn ] |
| 解释 | n.保留，保持，保持力，记忆力 |
| 英英释义 | the continued use, existence or possession of something or someone |
| 发音 |  |
| 例句 |
1. They advocate the retention of our nuclear power plants. 他们主张保留我们的核电厂。 2. His retention of energy at this hour is really surprising. 人们惊叹他在这个时候还能保持如此旺盛的精力。 |
