vt.& vi.展开;铺开;展现;显示;
例句:
We unrolled our sleeping bags.
我们打开了睡袋。
Unroll the arm to rest the forearm and hand completely on the floor.
展开手臂将前臂和手都放在地板上.
Never unroll the condom before you roll it on the penis.
在把安全套卷绕在阴茎前不要展开.