xx
英 ['eks'eks]
美 ['eks'eks]
- abbr. without securities or warrants 无权或无保障（代号）
xx 变化形式
易混淆的单词： XX
xx 双语例句
When it comes to sex chromosomes , women are xx and men are xy . 就性染色体而言，女性为xx，男性为xy。 An xy combination will become a boy , while an xx combination will be a girl . xy染色体的结合会生出男孩，而xx染色体的结合会生出女孩。 Your call to los angeles lasted xx minutes . It will cost xx u. s.dollars . 您打到洛杉矶的电话持续了xx分钟，费用是xx美元. In mammals , females are xx while males are xy so a woman should never be able to provide the necessary y chromosome genes to produce a son . 在哺乳动物中，雌性的性染色体是xx而雄性的是xy所以一个女人是绝不可能产生男性不可缺少的y染色体基因而生育男孩的。 Since men die , on average , five years earlier than women , those much bemoaned visits to the doctor for a routine physical must play at least a minimal role in the difference between xx and xy longevity . 一般来说，男人会比女人早死五年，除了xx和xy染色体的寿命差异外，没有去看医生做例行检查至少有一部分原因。