3 sentences

1. 我们要准备降落了。

   wǒ​men yào zhǔn​bèi jiàng​luò le.

   We're getting ready to land.

   Source: OpenSubtitles

2. 我们正准备降落。

   wǒ​men zhèng zhǔn​bèi jiàng​luò.

   We're coming in for a landing.

   Source: OpenSubtitles

3. 那是一架正准备降落的飞机。

   nà shì yī jià zhèng zhǔn​bèi jiàng​luò de fēi​jī.

   It's a plane about to land.

   Source: OpenSubtitles