Hydrocarbon is a basic element of chemical reactions.

He is an expert in enzymology and conducts many researches.

My great-great-grandmother is still healthy and living a long life.

She brought up her child alone.

We could not find the relevant information.

Zen is a festival ceremony performed by the Chinese emperor.

Through the practice of Zen, I gained peace of mind.

She repaired my jeans using the darning technique.

We went on a trip on a big ship.

This town is in a transition period.