种皮上留有种脐或种痕.The seed coat is marked with a hilum or seed scar.偶而, 脐周淋巴结可触及.Occasionally, lymph nodes can be found in the vicinity of the umbilicus.方法体外培养人脐静脉内皮细胞,通过传代形成细胞的衰老模型.Methods Human umbilical vein endothelial cell...
He insisted that there could be no linkage with other Mideast problems.他坚持主张不把它与其他中东问题挂钩。No one disputes the direct linkage between the unemployment rate and crime.谁都不会质疑失业率与犯罪之间存在直接联系。There is no formal linkage between ...