2 sentences for 重叠 (chóng​dié — overlap)

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