他穿着牛仔夹克和牛仔裤去参加休闲活动。

He wore a ___denim jacket and jeans to the casual event.

如果你有时间去购物，可以给我买一条蓝色牛仔裤。

If you have time to go shopping, you could buy me a pair of blue ___denim jeans.

牛仔布是一种耐用的棉织物，常用于制作牛仔裤等休闲服装。

___Denim is a durable cotton fabric frequently used for making casual wear like jeans.