以示警戒 yǐ shì jǐng jiè 🔊 to serve as a warning (idiom) + Keep this word Meanings yǐ shì jǐng jiè to serve as a warning (idiom) Its characters 以yǐto useHSK 5示shìto show警jǐngto alert戒jièto guard againstHSK 7–9