4 sentences

1. 他焦躁地在房间里走来走去。

   tā jiāo​zào de zài fáng​jiān lǐ zǒu​lái​zǒu​qù.

   He paced the room irritably.

   Source: Dong Chinese Dictionary

2. 老教授背着手在实验室里走来走去。

   lǎo jiào​shòu bèi​zhe​shǒu zài shí​yàn​shì lǐ zǒu​lái​zǒu​qù.

   The old professor walked around the lab with his hands behind his back.

   Source: Dong Chinese Dictionary

3. 他一边等火车，一边在月台上走来走去。

   tā yī​biān děng huǒ​chē, yī​biān zài yuè​tái shàng zǒu​lái​zǒu​qù.

   He walked back and forth on the platform while waiting for the train.

   Source: Tatoeba

4. 他在走廊里焦急地走来走去，坐立不安。

   tā zài zǒu​láng lǐ jiāo​jí de zǒu​lái​zǒu​qù, zuò​lì​bù'ān.

   He paced back and forth in the corridor anxiously, unable to sit still.

   Source: Dong Chinese Dictionary