to try to prevent sth or to prevent sb from doing sth, especially by making it difficult to do or by showing that you do not approve of it 阻拦；阻止；劝阻
~ (doing) sth
a campaign to discourage smoking among teenagers
劝阻青少年吸烟的运动
~ sb
I leave a light on when I’m out to discourage burglars.
我出门时开着灯以防夜贼闯入。
~ sb from doing sth
His parents tried to discourage him from being an actor.
他的父母试图阻止他去当演员。