In science, unlike math, we can't have absolute certainty, but in the scheme of things, this is not a health risk I would be concerned about at all.
不像数学,在科学里我们不能有绝对的肯定。但是在日常生活中,我肯定不会担心手机会给我的健康带来什么威胁。
In fact, I would go so far as to say that the authorization scheme is not complete until there is nothing that you can remove or simplify without breaking it.
事实上,我写了这么多文字的目的就是希望大家能够认识到,授权模式永远都不是完善的,除非已经简化到不能再简化为止。
Under the scheme, parents would not usually be able to take leave simultaneously.
根据这项计划,父母通常不能同时休假。
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