China's own history should alert it to the contradictions of Olympic participation.

中国应该对自己与奥运会纠葛的历史保持审慎。

youdao

Your father has had a serious heart attack. We cant tell how bad it is at this point, but hes alive and alert. Now, can you tell me anything about his medical history?

你父亲心脏病发作很严重。我们目前无法知道有多糟，但是他还活著，还有危险。现在，你能告诉我他的病史吗？

youdao

As the two sides of the same subject in ideological history, anti-enlightenment is their common rival they should be alert against.

作为一个思想史命题的两个面向，反启蒙才是它们共同警惕和防范的对手。

youdao

If you want to find a good side of this event, then that is it, that we're more alert than ever in history, and we stand ready for whatever will come.

CNN: "The Secret Life of Germs" author Philip Tierno

It is the first time in the country's history that "scarlet alert" has been declared.

BBC: Toulouse school killer 'had camera around his neck'

Knowledgeable and trained inspectors go through millions of claims, comparing the data against past history, averages, and other digital information that will alert them to unusual activity in billing.

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