一些人对时间的理解是基于逻辑和已知的物理学定律，而其中一些纯粹只是出于方便省事以及来自听起来合理的假设。
Some of our understanding of time is based on logic and the known laws of physics, but some of it is based purely on convenience and reasonable-sounding assumptions.
这款产品怎么样才能让我的生活更方便、更省事？
How about the product to make my life more convenient, more convenient?
负弹模法可适用于多种情况，且精度高又省事，为结构应力分析带来极大方便。
The negative elastic modulus method, highly accurate, easy to use, is useful in many cases, and it brings great convenience to the stress analysis oJ structures.
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