3 sentences

1. 这种新药能有效延缓衰老的过程。

   zhè zhǒng xīn yào néng yǒu​xiào yán​huǎn shuāi​lǎo de guò​chéng.

   This new drug can effectively slow down the aging process.

   Source: Dong Chinese Dictionary

2. 保持良好的生活习惯可以延缓衰老。

   bǎo​chí liáng​hǎo de shēng​huó xí​guàn kě​yǐ yán​huǎn shuāi​lǎo.

   Maintaining good living habits can delay aging.

   Source: Dong Chinese Dictionary

3. 经常思考问题可以锻炼大脑，防止衰老。

   jīng​cháng sī​kǎo wèn​tí kě​yǐ duàn​liàn dà​nǎo, fáng​zhǐ shuāi​lǎo.

   Thinking often can exercise the brain and prevent aging.

   Source: Dong Chinese Dictionary