膝盖骨 xīgàigǔ kneecap Origin Definitions Defs Strokes Stroke Words Sentences Sents 1 sentence 婴儿生下来是没有膝盖骨的。 yīng'ér shēng xia lái shì méiyǒu xīgàigǔ de. Babies are born without kneecaps. Source: AI Challenger 2017