sigh [saɪ]

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n.叹息；vi.叹息，渴望；vt.叹息着说

to breathe out slowly and noisily , expressing tiredness , sadness , pleasure , etc .

He gave a deep sigh. 他深深地叹了一口气。
He slowly sat on the seat with a sigh. 他叹了一口气，慢慢地坐到位子上。