I learned about casein in biochemistry class.

This plant is strongly affected by auxin.

The string of this bow is made of horsehair.

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.

I made vegetables and fish fried directly for dinner today.

He cautioned not to speak ill of others, saying, 'Illness enters by the mouth, and disaster does not come out of it.'

He was singing to himself alone in the room.