3 sentences

1. 手机讯号在这里很弱。

   shǒu​jī xùn​hào zài zhè​lǐ hěn ruò.

   The cell phone signal is very weak here.

   Source: Dong Chinese Dictionary

2. 我们收到你们的讯号。

   wǒ​men shōu​dào nǐ​men de xùn​hào.

   We received your signal.

   Source: OpenSubtitles

3. 它们在追踪我们的讯号。

   tā​men zài zhuī​zōng wǒ​men de xùn​hào.

   They're tracking our signals.

   Source: OpenSubtitles