4 sentences

1. 这里的地形重叠交错，进山后很容易迷路。

   zhè​lǐ de dì​xíng chóng​dié jiāo cuò, jìn​shān hòu hěn róng​yì mí​lù.

   The terrain here is overlapping and crisscrossed; it's easy to get lost after entering the mountains.

   Source: Dong Chinese Dictionary

2. 由于设计错误，这两张图纸的内容重叠了。

   yóu​yú shè​jì cuò​wù, zhè liǎng zhāng tú​zhǐ de nèi​róng chóng​dié le.

   Due to a design error, the contents of these two drawings overlap.

   Source: Dong Chinese Dictionary

3. 汉语中有许多动词可以重叠使用。

   Hàn​yǔ zhōng yǒu xǔ​duō dòng​cí kě​yǐ chóng​dié shǐ​yòng.

   There are many verbs in Chinese that can be reduplicated.

   Source: Dong Chinese Dictionary

4. 这两个部门的职能有很多重叠之处。

   zhè liǎng gè bù​mén de zhí​néng yǒu hěn​duō chóng​dié zhī chù.

   There is a lot of overlap between the functions of these two departments.

   Source: Dong Chinese Dictionary