Binary operation is one of the basic concepts in algebra.

The only thing I could rely on in the room was a single lamplight.

The resounding sound of the bell filled the quiet night sky.

In the deep parts of the sea, there are many creatures that emit phosphorescence.

She had a tortoiseshell bracelet wrapped around her wrist.

The civet is a nocturnal animal that mainly inhabits tropical rainforests.

The musk ox is a large mammal that lives in cold regions.

He has strong masseters, so he can easily bite through hard food.

The scent of this powdered incense is very calming.

Collagen is an important component for keeping our skin and bones strong.