noun🔗Share睾丸，蛋。 A testicle of a vertebrate."The doctor examined the patient's testis to check for any abnormalities. "医生检查了病人的睾丸，看看有没有什么异常。anatomyorganbodymedicinephysiologysexanimalChat with AIVocabulary GamePractice Reading
noun🔗Share精巢，雄性生殖腺 An analogous gland in invertebrates such as the hydra."In biological studies of hydra reproduction, researchers examine the testis for signs of sperm production. "在对水螅生殖的生物学研究中，研究人员会检查它们的精巢，观察是否有精子产生的迹象。organbiologyanimalChat with AIVocabulary GamePractice Reading
