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1·The microstructure of rubber material is an intrinsic factor of the relax time spectrum.

橡胶材料的微观结构是其松弛时间谱的内在因素。

2·The percolation mechanism in low permeable reservoirs is investigated through studying the law of NMR relax time in different displacement stage of full core.

通过研究全直径岩心不同驱替阶段核磁共振弛豫时间谱的变化规律，探讨了低渗透储层渗流机理。

3·Summer is a time to relax, regroup and catch up on all those things you've been putting off all year.

夏天是休养整顿、并处理一年中积压事务的时候。《牛津词典》

4·Relax is not a waste of time for it can improve your study efficiency.

休息放松并不是浪费时间，因为它可以提高你的学习效率。

5·People need time away from the pressures of study or work to relax and enjoy time with friends and family.

人们需要时间远离学习或工作的压力，放松身心，享受与朋友和家人在一起的时光。

6·I believe that people should take time to relax with hobbies or activities that are very different from what they do at work.

我认为，有时候人们应该通过业余爱好或与工作截然不同的活动来放松自己。

7·However, having free time to relax and pursue hobbies is important.

然而，有空闲时间放松和追求爱好是很重要的。

8·A lot of people feel that half an hour is just enough time to relax.

很多人觉得半小时就足够放松了。

9·I really felt tired, I needed time to relax.

我真的很累，我需要时间放松。

10·Many children use Internet to get useful information and to relax in their free time.

许多孩子利用互联网获取有用的信息，并在空闲时间放松自己。