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. 輕而易舉的事[非正式] [usu sing: v-link 'a' N]

So it's an easy decision. It's a slam dunk. 所以說做這個決定很容易。這是件輕而易舉的事情。

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

...a series of spectacular slam dunks. ...接二連三的漂亮扣籃。