My biological clock is disrupted, and I've been having sleepless nights.

Invasive species can have a major impact on the natural environment.

Chimpanzees are very intelligent animals.

I add a little black pepper to the soup.

I like to add black pepper to the soup.

I like to add black pepper to the soup.

He terrified people by using black magic.

He has a black belt in karate.

I drink black vinegar every day for my health.

In the Edo period, women blackened their teeth as a symbol of beauty.