He had unscrewed the caps most of the way.

他已经快要把瓶盖拧开了。

She unscrewed the cap of her water bottle and gave him a drink.

她拧开水瓶盖，给他喝了一口水。

He unscrewed the back of the telephone and started connecting it to the cable.

他拧下电话后壳的钉子，开始把电话线连到电话机上。

That morning while at work, Piechowski had unscrewed a bolt keeping the doors locked, so they could climb in.

那天早晨干活的时候，佩特罗夫斯基拧掉了一个锁门的螺栓，因此他们可以爬进去。

He unscrewed a jar of mustard.

他拧开了芥子酱的瓶盖。