界线jièxiànboundary; dividing line; limitHSK 7-9PronunciationjièxiànExample sentence这条河是两省之间的界线。Zhè tiáo hé shì liǎng shěng zhī jiān de jièxiàn.This river is the boundary between the two provinces.Read and choose an answerOne fixed sampleExplore a sample