Degree of expanding chest The patients sit up straight to record the difference of level thorax round diameter between the deep inspiration and deep expiration in the 4th lib.

患者端坐，记录其第4肋间水平胸廓周径在深吸气及深呼气时之差。

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The contrast analysis of male and Female postgraduates, the difference of level of mental health was not significant.

男女研究生对比，两性在心理健康水平上并没有显著差异。

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And the answer is that-- yes it won't make a difference to our wellbeing but it also doesn't mean that we cannot increase our level of wellbeing.

答案是-,是的，它不会改变我们的幸福水平,但并不意味着,我们不能提升自己的幸福水平。

哈佛公开课 - 幸福课课程节选

So why the difference in level of importance in terms of the public event?

WHITEHOUSE: Press Briefing

Again, there was a marked difference in the level of detail and richness in description from the bilingual pupils.

BBC: Bilingual children 'better at problem-solving skills'

The torpedo-shaped instrument gathers data about the difference between the level of the seawater beneath the ice and the surface of the ice itself.

BBC: Arctic ice melting at 'amazing' speed, scientists find