3 sentences

1. 这次胜利成为了他事业上的重要转折。

   zhè cì shèng​lì chéng​wéi le tā shì​yè shàng de zhòng​yào zhuǎn​zhé.

   This victory became a major turning point in his career.

   Source: Dong Chinese Dictionary

2. 面对人生的重大转折，他不知道该何去何从。

   miàn​duì rén​shēng de zhòng​dà zhuǎn​zhé, tā bù zhī​dào gāi hé​qù​hé​cóng.

   Facing a major turning point in life, he didn't know which way to go.

   Source: Dong Chinese Dictionary

3. 这段文章的转折非常自然。

   zhè duàn wén​zhāng de zhuǎn​zhé fēi​cháng zì​rán.

   The transition in this passage is very natural.

   Source: Dong Chinese Dictionary