6 sentences

1. 这栋公寓的底层是商铺。

   zhè dòng gōng​yù de dǐ​céng shì shāng​pù.

   The ground floor of this apartment building consists of shops.

   Source: Dong Chinese Dictionary

2. 欢迎来到食物链的最底层。

   huān​yíng lái​dào shí​wù​liàn de zuì dǐ​céng.

   Welcome to the bottom of the food chain.

   Source: OpenSubtitles

3. 他把重要文件隐藏在抽屉的最底层。

   tā bǎ zhòng​yào wén​jiàn yǐn​cáng zài chōu​ti de zuì dǐ​céng.

   He hid the important documents at the very bottom of the drawer.

   Source: Dong Chinese Dictionary

4. 他在小说中描写了社会底层的种种不平。

   tā zài xiǎo​shuō zhōng miáo​xiě le shè​huì dǐ​céng de zhǒng​zhǒng bù​píng.

   In his novel, he depicted the various injustices suffered by those at the bottom of society.

   Source: Dong Chinese Dictionary

5. 他的小说主要描写社会底层人物的生活。

   tā de xiǎo​shuō zhǔ​yào miáo​xiě shè​huì dǐ​céng rén​wù de shēng​huó.

   His novels primarily depict the lives of people at the bottom of the social ladder.

   Source: Dong Chinese Dictionary

6. 他把那叠秘密信件掩藏在书架的最底层。

   tā bǎ nà dié mì​mì xìn​jiàn yǎn​cáng zài shū​jià de zuì dǐ​céng.

   He hid the stack of secret letters at the bottom of the bookshelf.

   Source: Dong Chinese Dictionary