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

He is learning about the handling of experimental animals.

Learning homonyms in Japanese is difficult.

Morality is an important element for smoothing human relationships.

My friend works at a real estate agency.

There is a problem with his aorta.

Kinetic energy is directly related to the speed of an object.

Sweet peas are blooming in my garden.

I bought a drink from the vending machine.

We went on a trip using the highway.