My favorite dessert is annin tofu.

He is a true gentleman.

By having positive thinking, you can think positively even in difficult situations.

The power supply in this area comes from that electrical substation.

I found an old box in the storeroom.

This reaction occurs through a chemical process.

He is an excellent chemist who made many discoveries.

He is an expert in petrochemistry.

He is an expert in chemical analysis.

It's difficult to decipher this chemical equation.