1 used to represent the sound of a sudden, loud hit ﹙突然的重击声﹚砰: The bombs went down — wham! — right on target. 炸弹落了下来，砰！正好击中目标。

2 used to show that sth that is unexpected has suddenly happened ﹙表示意外的事情突然发生﹚: I saw him yesterday and — wham! — I realized I was still in love with him. 我昨天看到他了。我猛地一下子意识到我仍然在爱着他。