His future is still undecided.

His attendance is irregular.

His irregular attendance is disrupting the team's schedule.

He went to sleep in a dejected state.

It's difficult to make sentences using infinitives.

He accepted the dangerous challenge with a daring smile.

I was surprised by his bold attitude.

Computational linguistics is the study of analyzing human language with computers.

Computational geometry is an important field of computer science.

He was able to solve the complex calculation quickly.