unfastening

She began unfastening the collar of her gown.

她动手解她长袍的领子。

People began unfastening their seat belts and pulling luggage from the overhead lockers, and all the while I was in the meadow.

人们开始松开安全带，把行李从头顶的储物柜里取出，而我一直坐在那片草地上。

Unfastening her dress, and still blushing, she began feeding her child.

她仍然有些脸红，解开衣服开始给孩子喂奶。

An unfastening or letting go of something caught or held fast.

解开，松开：把抓住或抓紧的东西松开或放开。