The testicles, in turn, produce the hormone testosterone which further advances the process of the embryo turning into a male. 進(jìn)而，睪丸產(chǎn)生睪丸激素，進(jìn)一步促進(jìn)胚胎發(fā)育成男性。
Testosterone, an anabolic hormone responsible for muscle growth among many other things, is produced by the body in order to rebuild the muscle to resist against future weight. 睪丸激素，這種同樣也負責肌肉生長(cháng)的合成代謝荷爾蒙，就會(huì )在體內合成出來(lái)，用于重建肌肉以抗拒日后的負重。
