His plan fell through.

I missed the opportunity to listen to the radio program I was interested in yesterday.

Natural language understanding is an important field of artificial intelligence.

He likes to take a walk in the park at dusk.

Did you hear his voice?

I want to learn the ancient wisdom of the I Ching.

His hobby is collecting precious metals.

He is good at solving geometry problems.

He shot the enemy with a machine gun.

The structure of the speech organs greatly affects the pronunciation of language.