3 sentences

1. 他关闭了多余的浏览器窗口。

   tā guān​bì le duō​yú de liú​lǎn​qì chuāng​kǒu.

   He closed the redundant browser windows.

   Source: Dong Chinese Dictionary

2. 他在浏览器中配置了全局代理。

   tā zài liú​lǎn​qì zhōng pèi​zhì le quán​jú dài​lǐ.

   He configured a global proxy in the browser.

   Source: Dong Chinese Dictionary

3. 浏览器顶部显示了许多打开的标签。

   liú​lǎn​qì dǐng​bù xiǎn​shì le xǔ​duō dǎ​kāi de biāo​qiān.

   Many open tabs are displayed at the top of the browser.

   Source: Dong Chinese Dictionary