水性shuǐxìng 1.游水的技能{swimming skill}: 他的～不错,能游过长江。{He is a good swimmer and can cross the Yangtze River by swimming.} 2.指江河湖海的深浅、流速等方面的特点{depth, currents and other characteristics of a river, lake, etc.}: 熟悉长江～。{be familiar with the characteristics of the Yangtze River}