例句 /

Melatonin is a kind of indolyl hormone biosynthesized in the pineal gland ,which has extensive physiological activities.

Melatonin is a kind of indolyl hormone biosynthesized in the pineal gland ,which has extensive physiological activities.

褪黑激素是色氨酸在松果体内生物合成的一种吲哚类激素,具有广泛的生理活性作用。