one of the two male reproductive glands that produce spermatozoa and secrete androgens;
\\\"she kicked him in the balls and got away\\\"
造句
用作名詞(n.)
Here is an embryonal carcinoma of the testis. 睪丸胚胎癌，上方是正常的睪丸的邊緣。
Here I reviewed the previous work on the gene expression patterns of human brain and testis, and proposed some potential suggestions for future research. 本文對人睪丸和腦基因表達譜的研究進行了回顧，并提出了該研究方向今后的一些研究設想。