keep eyes open

基本解释

So when we need to pay attention, we keep our eyes open.
因此当我们需要注意的时候，我们保持我们的眼睛睁开。
Keep your eyes open and be willing to change, but have faith in yourself, too.
保持你的双眼睁开，并且愿意改变，但同时也要对自己有信心。
blog.sina.com.cn
With so many people using cell phones so frequently these days, perhaps the main point of the 2B classification is not to alarm people but to encourage researchers to keep their eyes open.
由于人们这些年来使用手机十分频繁，或许将手机划入2B类这件事并不会唤醒普通民众的警惕，却提醒研究人员时刻睁大眼睛。

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