2 sentences for 对讲机 (duì​jiǎng​jī — walkie-talkie)

1. 我说过别用对讲机联系我了。

   wǒ shuō guo bié yòng duì​jiǎng​jī lián​xì wǒ le.

   I told you not to radio me.

   Source: OpenSubtitles

2. 救援队员随身携带着对讲机以便保持联络。

   jiù​yuán duì​yuán suí​shēn xié​dài zhe duì​jiǎng​jī yǐ​biàn bǎo​chí lián​luò.

   Rescue team members carry walkie-talkies to stay in contact.

   Source: Dong Chinese Dictionary