息息相关: one's heart beats together with somebody's.; be closely bound up; be closely linked with; related as closely as each breath is to the next; vitally interrelated
作运动与健康息息相关: taking exercise is closely related to health
自然: 自然at ease; natural; free from affectation 短语和例子态度非常自然 be quite at ease; 她说英语, 语调很自然。 she speaks english with very natural intonation. 他不自然地笑了一笑。 he forced a smile. 她唱歌的嗓音很自然。 she sings wit
