He achieved a tan'yao in mahjong.

Please disconnect the power.

He conducted a thought experiment to solve a problem in physics.

These test results are showing unexpected outcomes.

We analyzed the data of the experimental group.

He has a deep interest in empirical science.

It is reported that North Korea has conducted another nuclear bomb test.

This project is still in the experimental stage.

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

Nuclear tests pose a great threat to world peace.