塌下来 tāxiàlai to collapse Origin Definitions Defs Strokes Stroke Words Sentences Sents 1 sentence 因为如果那样的话，天就会塌下来。 yīnwèi rúguǒ nàyàng dehuà, tiān jiù huì tā xiàlai. Because if that happened, the sky would fall down. Source: AI Challenger 2017