literally, a willow tree that sways or bends in the direction of the wind

湖边的随风倒柳在夕阳下显得格外柔美。

an idiom describing a person who has no fixed principles and shifts their position to follow the crowd or suit the current situation

他这种随风倒柳、毫无立场的做法，让同事们都很鄙视。