警戒jǐngjièto warn; to alert; to be on guardHSK 7-9PronunciationjǐngjièExample sentence警方已在事故现场拉起警戒线,提醒行人不要靠近。jǐngchá yǐ zài shìgù xiànchǎng lā qǐ jǐngjiè xiàn, tíxíng xíngrén bú yào kàojìn.The police have set up a cordon at the accident scene to warn pedestrians not to approach.Read and choose an answerOne fixed sampleExplore a sample