This is indeed a strong argument: social-science research finds that people save more if they do so automatically rather than having to choose to set something aside every month.
这确实是一个有力的论点:社会科学研究发现,如果他们按此自觉行事,而非每月必须选择为某事留有余款,他们会存更多的钱。
I move from time to time, so its important to have something that's easy to carry from place to place and strong enough that if something happens it keeps things safe.
我时不时的搬家,所以有一个坚固便携的工具用来搬运是很重要的。
It's - a suture or a stitch has to hold the wound closed so it has to have certain mechanical strength and imagine the problem of making something that's dissolvable so it disappears but also is strong enough to hold a wound closed reliably for a length of time.
能够拉紧切口的缝合线,就必须具有一定的机械张力,大家想像一下制造这种缝合线的难度,身体组织不仅要能吸收这种缝合线,而且这种线必须有足够的张力,一定时间内能够拉紧切口
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