The use of mobile phones is prohibited during class.

There is a class observation at my son's school tomorrow.

The term 'Eta' symbolizes historical discrimination and should not be used in modern society.

Taki is my best friend.

More or less, we all agree with his opinion.

These test results are showing unexpected outcomes.

We analyzed the data of the experimental group.

He has a deep interest in empirical science.

The experimenter analyzed the data in detail.

Animal experiments are necessary for the advancement of science, but there are also ethical issues.