HillisˈhɪləsEconomist⁵³⁵⁸¹⁺¹ 基本例句 n.希利斯¹⁰⁰ Hillis thinks this can be explained if the asexual clams sometimes fertilise eggs from another species and retain some or all of their genes, rather than ejecting them. 西里斯认为这种现象的原因可能是:无性繁殖的蛤排出的卵会被其它蛤的精子进入,但受精卵没有排出精子的部分或全部基因,而是保留了下来。 yeeyan