look be careful look out take care look sharp keep one´s eyes open keep one´s eyes peeled
The slightest little bit of inattention can let something slip through.
稍不留神就会让某些东西蒙混过关。
—— 柯林斯例句He listened to chattering maids as they passed by.
他留神听着从身边走过的姑娘们嘴里在闲扯着什么。
—— 柯林斯例句You really ought to watch these quiet types.
你真的应该留神这些寡言少语的人。
—— 柯林斯例句She let the news slip by mistake , in an unguarded moment.
她一不留神泄漏了消息。
—— 给力词典精选I shall look out that I don´t trust him again.
我要留神不再信任他了。
—— 给力词典精选