3 sentences

1. 古人常在夏天曝书以防虫蛀。

   gǔ​rén cháng zài xià​tiān pù shū yǐ​fáng chóng​zhù.

   The ancients often sun-dried books in the summer to prevent insect damage.

   Source: Dong Chinese Dictionary

2. 这种香可以入药，也能夹在书页里防止虫蛀。

   zhè zhǒng xiāng kě​yǐ rù yào, yě néng jiā zài shū​yè lǐ fáng​zhǐ chóng​zhù.

   This herb can be used as medicine or placed between book pages to prevent moth damage.

   Source: Dong Chinese Dictionary

3. 吃完甜食记得漱一下口，这样不容易长蛀牙。

   chī​wán tián​shí jì​de shù yī​xià kǒu, zhè​yàng bù róng​yì zhǎng zhù​yá.

   Remember to rinse your mouth after eating sweets to prevent cavities.

   Source: Dong Chinese Dictionary