5 sentences

1. 宪兵正在大门口站岗。

   xiàn​bīng zhèng​zài dà​mén​kǒu zhàn​gǎng.

   The military police are standing guard at the gate.

   Source: Dong Chinese Dictionary

2. 士兵们在城楼上站岗。

   shì​bīng men zài chéng​lóu shàng zhàn​gǎng.

   The soldiers are standing guard on the city gate tower.

   Source: Dong Chinese Dictionary

3. 那些人昨晚和我一起站岗。

   nà​xiē rén zuó​wǎn hé wǒ yī​qǐ zhàn​gǎng.

   Those men stood guard with me last night.

   Source: OpenSubtitles

4. 你在这里站岗！

   nǐ zài zhè​lǐ zhàn​gǎng!

   You stand guard here!

   Source: OpenSubtitles

5. 两名武警在政府大楼门前站岗。

   liǎng míng wǔ​jǐng zài zhèng​fǔ dà​lóu mén qián zhàn​gǎng.

   Two armed police officers are standing guard in front of the government building.

   Source: Dong Chinese Dictionary