[xià shuǐ]
（进入水中）enter the water;be launched
launch a ship
（使）船下水
A new battleship was launched from a shipyard.
一艘新战舰从船坞下水。
（做坏事） take to evildoing; fall into evil ways
involve sb. in evildoing; entice [inveigle] sb. into evildoing
拖人下水
（向下游航行的） downriver; downstream
downriver boat
下水船