Definition: the sound that is made when someone sighs Level: B2
他读了信，深深地叹了口气。
He read the letter and gave a deep ___sigh.
我深深地叹了口气，走进了房子！
I entered the house with a deep ___sigh!
一声宽慰的叹息从她唇间逸出。
A ___sigh of relief escaped her lips.
