1. 注意：look on观看,旁观 | look out注意 | look over翻阅,浏览

2. 留神,注意：look on 旁观;观看 | look out 留神,注意 | look over 仔细检查,细看;察看,巡视

3. 警惕：look out upon 朝向 | look out 警惕 | look out 面朝

1. - see look 11

verb

1. to protect someone's interests

e.g. A man's gotta look out for his family

2. be vigilant, be on the lookout or be careful

e.g. Watch out for pickpockets!

Synonym: watchwatch out