Definition
留心 (liú xīn) means 'to be careful, pay attention' and is a separable verb (离合词) — you can insert a word like 个 (e.g., 留个心). It emphasizes sustained mindfulness rather than immediate danger, which is the focus of 当心 and 留神. 留意 is very similar but leans toward 'take note of' specific details.
verb
to be carefulto pay attentionto keep an eye on
Examples
- 留心。Nǐ guò mǎlù de shíhou yídìng yào liú xīn.You must be careful when crossing the street.
- ，。Zhè jiàn shì hěn zhòngyào, nǐ duō liú ge xīn.This matter is very important; keep an extra eye on it.
- ，留心。Shàngkè de shíhou yào rènzhēn tīngjiǎng, duō liú xīn.During class, you should listen attentively and pay close attention.
Browse more HSK 7-9 words or search the full 43,000-word dictionary.