3 sentences

1. 他从门缝里探头往里看。

   tā cóng mén​fèng lǐ tàn​tóu wǎng lǐ kàn.

   He peered inside through the crack in the door.

   Source: Dong Chinese Dictionary

2. 说不定他会从窗户那里探头张望。

   shuō​bu​dìng tā huì cóng chuāng​hu nà​li tàn​tóu zhāng​wàng.

   He might stick his head out the window.

   Source: OpenSubtitles

3. 这个探头的灵敏度非常高。

   zhè gè tàn​tóu de líng​mǐn​dù fēi​cháng gāo.

   The sensitivity of this probe is very high.

   Source: Dong Chinese Dictionary