通过研究一个人的个人信息,无人机可以知道什么时候该带来一杯咖啡。
The drone can know when to bring a cup of coffee by studying a person's personal information.
任何一个曾经辛苦地经历过 SAT 考试的人都可以证实,应试技巧也很重要,即是否知道什么时候该猜测答案或者什么样的问题该跳过去。
Anyone who has toiled through SAT will testify that test-taking skill also matters, whether it's knowing when to guess or what questions to skip.
当他们这样做的时候,你就该知道是时候停下来,继续做自己的事。
When they do so, you should know that it's time for you to stop and get on with your day.
I don't really know what I do in my free time in London.
我真的不知道,在伦敦我没事的时候该干什么。
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