双氢睾酮在男性前列腺的生长中起着重要作用。

___Dihydrotestosterone plays a significant role in the growth of the male prostate.

医生建议他服用一种药物来降低体内的二氢睾酮水平，以减缓脱发。

The doctor recommended a medication to lower his ___dihydrotestosterone levels to slow down hair loss.