Definition
- C1
To watch carefully for the appearance of someone or something.
留意观察
At the airport, please keep your eye out for any suspicious packages.
在机场，请密切留意任何可疑包裹。
We're looking for a house with a big red door, please keep an eye out for it.
我们在找一间有大红门的房子，请帮我们留意一下。
If you see my brother in the crowd, please let me know; he's wearing a blue jacket.
如果你在人群中看到我弟弟，请告诉我；他穿着一件蓝色夹克。