曲棍球运动员击球时必须确保球不越过球门区线。
The hockey player must make sure the ball doesn't cross the ___crease when hitting it.
这条丝绸裙子洗完后变得皱巴巴的。
The silk dress became ___creased after washing.
纸张上布满了褶皱。
The paper is full of ___creases.