3 sentences

1. 请各位旅客迅速就位。

   qǐng gè​wèi lǚ​kè xùn​sù jiù​wèi.

   Would all passengers please take their seats immediately.

   Source: Dong Chinese Dictionary

2. 直升机就位。

   zhí​shēng​jī jiù​wèi.

   Helicopter in position.

   Source: OpenSubtitles

3. 特警队员在大楼屋顶就位，准备进行突袭。

   tè​jǐng duì​yuán zài dà​lóu wū​dǐng jiù​wèi, zhǔn​bèi jìn​xíng tū​xí.

   SWAT team members took positions on the building's roof, ready to launch a raid.

   Source: Dong Chinese Dictionary