生命线shēngmìngxiànlifeline; a vital connection or supportHSK 7-9PronunciationshēngmìngxiànExample sentence这条输水管是干旱地区居民的生命线。Zhè tiáo shūshuǐguǎn shì gānhàn dìqū jūmín de shēngmìngxiàn.This water pipeline is the lifeline of the residents in the arid region.Read and choose an answerOne fixed sampleExplore a sample