2 sentences

1. 他决定接受变性手术。

   tā jué​dìng jiē​shòu biàn​xìng shǒu​shù.

   He decided to undergo gender reassignment surgery.

   Source: Dong Chinese Dictionary

2. 由于高温，蛋白质发生了变性。

   yóu​yú gāo​wēn, dàn​bái​zhì fā​shēng le biàn​xìng.

   Proteins denature when exposed to high temperatures.

   Source: Dong Chinese Dictionary