They may, for examp Slave e, affect the viability of sperm that bear theY chromosome, which w kdetermines male sex -- or the viability of male fetuses.是什么意思_They may, for examp Slave e, affect the viability of sperm that bear theY chromosome, which w kdetermines male sex -- or the viability of male fetuses.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句