Definition: not firmly attached in place Level: B2
我需要缝好衬衫上那颗松动的纽扣。
I need to fix that ___loose button on my shirt.
小心点，有一级楼梯已经松动了。
Be careful, one of the stairs has come ___loose.
她更喜欢披散着头发，而不是扎成马尾辫。
She prefers to wear her hair ___loose rather than in a ponytail.
