His recovery was miraculous.

His attitude was threatening, and I became scared.

Fundamental knowledge of mathematics is necessary to solve advanced problems.

This summer was record-breaking heat.

His way of thinking is very philosophical.

His behavior was very comedic.

I was deeply impressed by the teachings of Fuke-shū.

We will use potassium cyanide in this experiment.

Sodium cyanide is widely used in the extraction of metals and the manufacture of electronic components.

Thermochemistry is a branch of chemistry that studies the interaction of heat and matter.