Anyway, we need to contact her.

The angle of view of this lens is wide.

The eagle owl is a nocturnal bird, and its large eyes help it see in the dark.

He is learning calligraphy with a square brush.

We need to calculate the azimuth of this building.

If the angle of incidence is large, the reflection becomes stronger.

This triangle has two acute angles.

His research mainly focuses on the chelicerae of spiders.

The antennae of this insect are very long.

The dogfish is a type of shark that lives in the deep sea.