slam dunk
noun [ C ] uk/ˈslæm ˌdʌŋk/ us/ˈslæm ˌdʌŋk/
灌篮,扣篮
a shot in basketball in which a player jumps up and pushes the ball down through the net
slam-dunk
verb [ T ] usuk/ˈslæm.dʌŋk/ (also dunk)
灌篮,扣篮
to jump up and force a basketball down through the net in order to score
Idiom
be a slam dunkidiom mainly US 成为必胜者
to be a certain winner
Although he's a strong candidate, he's not a slam dunk. 虽然他是一个很有竞争力的候选人,但他没有必胜的把握。