I undid the package and took out the books.

我打开包裹取出书来。

He undid most of the good work of the previous manager.

他把前任经理的大部分功绩都毁掉了。

I undid the bottom two buttons of my yellow and grey shirt.

我解开了我黄灰色相间衬衫最下面的两个钮扣。

Getting up she undid the heavy shawl and the two little dresses.

她站起来，解开沉重的披肩和两条小裙子。

He undid the string round a parcel.

他解开了绑包裹的绳子。