3 sentences

1. 他在书页的空白处加了简短的题识。

   tā zài shū​yè de kóng​bái​chù jiā le jiǎn​duǎn de tí zhì.

   He added a brief inscription in the margin of the page.

   Source: Dong Chinese Dictionary

2. 他在书页边缘写下了许多精彩的点评。

   tā zài shū​yè biān​yuán xiě​xià le xǔ​duō jīng​cǎi de diǎn​píng.

   He wrote many brilliant comments in the margins of the book.

   Source: Dong Chinese Dictionary

3. 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