4 sentences

1. 我们只是需要证实一下你的行踪。

   wǒ​men zhǐ​shì xū​yào zhèng​shí yī​xià nǐ de xíng​zōng.

   We just need to verify your whereabouts.

   Source: OpenSubtitles

2. 他的行踪非常诡秘，没人知道他在哪里。

   tā de xíng​zōng fēi​cháng guǐ​mì, méi rén zhī​dào tā zài nǎ​lǐ.

   His whereabouts are very mysterious; no one knows where he is.

   Source: Dong Chinese Dictionary

3. 警方利用卫星定位系统追踪失窃车辆的行踪。

   jǐng​fāng lì​yòng wèi​xīng dìng​wèi xì​tǒng zhuī​zōng shī​qiè chē​liàng de xíng​zōng.

   The police used satellite positioning systems to track the movements of the stolen vehicle.

   Source: Dong Chinese Dictionary

4. 警察在大雪中失去了嫌疑人的行踪。

   jǐng​chá zài dà​xuě zhōng shī​qù le xián​yí​rén de xíng​zōng.

   The police lost track of the suspect in the heavy snow.

   Source: Dong Chinese Dictionary