xià shuǐ
downstream
to go into the water
to put into water
to launch (a ship)
fig. to fall into bad ways
to lead astray
to go to pot
tuō xià shuǐ
lit. to pull sb into the water
to involve sb in a messy business
to get sb into trouble
tuō rén xià shuǐ
lit. to pull sb into the water
fig. to involve sb in a messy business
to get sb into trouble