[sing. U] the act of watching something carefully in order to warn people of any danger 看守.守卫 keep watch 守望.值班.放哨 on watch 守望.值班 watch over 登看.监视 syn. look water ['w :t ] n. [U] 1. the colorless liquid that falls as rain, fills lakes and rivers, and is necessary for life to exist 水 【查看更多】
