I was disappointed by his cold attitude.

We will use chlorine in this chemical experiment.

A grapheme is the smallest unit that makes up written language.

In Japanese, graphemes include hiragana, katakana, kanji, etc.

Please show me your bare face.

I made vegetables and fish fried directly for dinner today.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

I am very interested in natural science.

Natural numbers start from 0 and continue as 1, 2, 3, 4, 5, 6, 7, 8, 9.

Natural selection plays an important role in the evolution of organisms.