1. The sex gland plays a vital role in the reproductive system.
生殖腺在生殖系统中起着至关重要的作用。

2. Hormones are released by the sex gland into the bloodstream.
激素由生殖腺释放到血液中。

3. Biological studies focus on the development of the sex gland.
生物学研究侧重于生殖腺的发育。

A: What is the primary function of a sex gland?
A：生殖腺的主要功能是什么？

B: It produces sex hormones and reproductive cells.
B：它负责产生性激素和生殖细胞。

1) An organ that produces gametes.

2) A gland that secretes sex hormones.

1. 生殖腺

e.g.
The sex gland produces testosterone.
生殖腺产生睾丸酮。

noun

1. An organ that produces reproductive cells and sex hormones.

Synonym: gonad