4 sentences

1. 船开始在水中慢慢下沉。

   chuán kāi​shǐ zài shuǐ zhōng màn​màn xià​chén.

   The ship began to sink slowly in the water.

   Source: Dong Chinese Dictionary

2. 我们还在下沉。

   wǒ​men hái zài xià​chén.

   We're still sinking.

   Source: OpenSubtitles

3. 你正在下沉。

   nǐ zhèng​zài xià​chén.

   You are sinking.

   Source: OpenSubtitles

4. 车子在下沉！

   chē​zi zài xià​chén!

   The car's sinking!

   Source: OpenSubtitles