| contraction | |
| 级别 | 第8级 |
| 音标 | [ kənˈtrækʃn ] |
| 解释 | n.缩略词，缩写式，害病 |
| 英英释义 | when something becomes smaller or shorter |
| 发音 |  |
| 例句 |
1. The contraction of this muscle raises the lower arm. 肌肉的收缩使前臂抬起。 2. The forces of expansion are balanced by forces of contraction. 扩张力和收缩力相互平衡。 |
