2 sentences

1. 他在操作系统中设置了全局快捷键。

   tā zài cāo​zuò​xì​tǒng zhōng shè​zhì le quán​jú kuài​jié​jiàn.

   He set up global shortcuts in the operating system.

   Source: Dong Chinese Dictionary

2. 你可以按快捷键Ctrl+Z来撤销刚才的操作。

   nǐ kě​yǐ àn kuài​jié​jiànCtrl+Z lái chè​xiāo gāng​cái de cāo​zuò.

   You can press Ctrl+Z to undo your last action.

   Source: Dong Chinese Dictionary