尽管总体上看，这种对癌症警惕的持续观察是一件好事，但研究人员越来越怀疑，是否所有这些检查对老年人来说都是必要的。

While such vigilant tracking of cancer is a good thing in general, researchers are increasingly questioning whether all of this testing is necessary for the elderly.

youdao

有机体更清醒，更警觉；随着有机体对周围环境变得更加敏感，这种提高的警惕性导致对更细微信号的理解。

The organism is more awake, more vigilant; this increased vigilance results in the apprehension of ever more subtle signals as the organism becomes more sensitive to its surroundings.

youdao

社交媒体当然可以用来逃避日常琐事，但我们必须警惕其对人整体心理健康的负面影响，比如上瘾。

Social media can certainly be an escape from the daily grind, but we must be cautioned against the negative effects, such as addiction, on a person's overall psychological well-being.

youdao

I think that we should be very careful not to let that deflect us from the recognition that this is important technology and that it's not the technology that's at fault; we have to get it right and then it will be powerful.

但我认为,我们应该警惕,不要因此对金融产生误解,事实上金融是门重要的应用技术,而且这一切并不是科技本身的错,我们应该完善这项技术,使其发挥正面作用

耶鲁公开课 - 金融市场课程节选