| 例句 |
noun The company needs to improve its training and retention of staff. 公司需要改进对员工的培训和留用工作。 Eating too much salt can cause fluid retention. 摄盐过多会导致体液潴留。 the importance of energy conservation and heat retention Visual material aids the retention of information. 直观材料有助于加强记忆。 |