A gonad is the organ that makes sex cells: sperm in a male, eggs in a female. In humans the male gonads are the testes (the two glands in the scrotum) and the female gonads are the ovaries (inside the lower belly).

A gonadgonad is the organ that makes sex cells是製造生殖細胞的器官——sperm in a male男性是精子，eggs in a female女性是卵子。In humans在人類身上，the male gonads are the testes男性的gonad是睪丸(the two glands in the scrotum)（陰囊裡的那兩個腺體），and the female gonads are the ovaries女性的gonad是卵巢(inside the lower belly)（在下腹部裡面）。

Biology and medicine use this calm, technical word as a cover for both; ordinary talk uses testicles and ovaries, and rude talk has other words. Though actually, in loose speech some people say gonads when they only mean the male ones, as in a kick in the gonads — that is a stretch, not the textbook meaning.

Biology and medicine use this calm, technical word as a cover for both生物學和醫學用這個冷靜、專業的字統稱兩者；ordinary talk uses testicles and ovaries日常說法用testicles和ovaries，and rude talk has other words粗俗的說法則有別的字。Though actually不過其實，in loose speech some people say gonads口語裡有人會說gonads，when they only mean the male ones但其實只是指男性的部分，as in a kick in the gonads像a kick in the gonads這種說法——that is a stretch, not the textbook meaning那是引申用法，不是教科書上的意思。

Many kinds of animal have gonads; the word is not for plants. You will meet gonadal in science for “about the gonads,” and hormones such as testosterone and estrogen come from them.

Many kinds of animal have gonads很多種動物都有gonad，the word is not for plants這個字不用在植物身上。You will meet gonadal in science你會在科學裡遇到gonadal這個字，for “about the gonads,”意思是『跟gonad有關的』，and hormones such as testosterone and estrogen come from them睪固酮、雌激素這類荷爾蒙就是從這裡分泌出來的。