2 sentences for 卵子 (luǎn​zi — testicles)

1. 他由于生病，一侧的卵子出现了明显的肿胀。

   tā yóu​yú shēng​bìng, yī cè de luǎn​zi chū​xiàn le míng​xiǎn de zhǒng​zhàng.

   Due to illness, one of his testicles showed noticeable swelling.

   Source: Dong Chinese Dictionary

2. 他在这次意外中受了伤，导致卵子部位肿得很厉害。

   tā zài zhè cì yì​wài zhōng shòu le shāng, dǎo​zhì luǎn​zi bù​wèi zhǒng de hěn lì​hai.

   He was injured in the accident, which caused severe swelling in his testicular area.

   Source: Dong Chinese Dictionary