alarm n.&v. /warn n.&v.
alarm的意思是“提醒,警告”,有使警觉,使做好准备的意思;warn的意思主要指“警告,告诫”,有事先告诉可能发生的事,警告说……的意思。
例:There were several alarms during the night but no actual air raid actually took place.
当夜,空袭警报拉响了数次,但并没有飞机来袭。
He warned us that the road was icy.
他警告我们说道路很滑。