HSK 7-9
警示
jǐngshì动
to warn; to alert; warning; cautionary
事故给所有司机带来警示。
Shì gù gěi suǒ yǒu sī jī dài lái jǐng shì.
The accident served as a warning to every driver.
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Appears across levels (7-9) in the HSK 3.0 word list.