slam dunk (also slam-dunk)

• 1. 

  N-COUNT If you say that something is a slam dunk, you mean that a success or victory will be easily achieved. 轻而易举的事 [非正式] [usu sing: v-link 'a' N]

  例：

  So it's an easy decision. It's a slam dunk.

  所以说做这个决定很容易。这是件轻而易举的事情。

• 2. 

  N-COUNT In basketball, a slam dunk is a shot in which a player jumps up and forces the ball through the basket. 扣篮

  例：

  ...a series of spectacular slam dunks.

  ...接二连三的漂亮扣篮。