While watching the movie, the audio was out-of-sync with the video, which made me feel very uncomfortable.

This video has severe audio lag, making it hard to watch.

This problem is very difficult.

He is watching a video.

I think his behavior is unjust.

I think his actions are completely inhumane.

Aldehyde is a very important compound in organic chemistry.

He was poisoned after eating something.

It seems like he has been poisoned by something.

I thought his behavior was really cruel.