单词 | 内有骨髓 |
例句 | DEFINITIVE EXAMPLES 权威例句〔long bone〕Any of several elongated bones of vertebrate limbs that have a roughly cylindrical shaft containing marrow.长骨:脊椎动物肢体延长的几块骨之一,大致呈圆柱形,内有骨髓美国传统 |
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