m开头单词 托福词汇 gmat词汇
Females live longer than males in many mammalian species.哺乳动物中雌性的寿命长于雄性已达到共识。
Some mammalian genes are widely studied such as P53 that controls the DNA damage checkpoint.在哺乳动物中,已确定了某些检查点基因,如P53基因。