3 sentences

1. 这群羊正在山沟里寻找草场。

   zhè qún yáng zhèng​zài shān gōu lǐ xún​zhǎo cǎo​chǎng.

   The flock of sheep is looking for pasture in the mountain gully.

   Source: Dong Chinese Dictionary

2. 我们不知道那条沟里全是蛇。

   wǒ​men bù zhī​dào nà tiáo gōu lǐ quán shì shé.

   We didn't know that gully was full of snakes.

   Source: OpenSubtitles

3. 这种地板通过凹凸的沟槽进行拼接。

   zhè zhǒng dì​bǎn tōng​guò āo tū de gōu cáo jìn​xíng pīn​jiē.

   This flooring is joined using tongue and groove joints.

   Source: Dong Chinese Dictionary