His way of speaking is affected, lacking in naturalness.

Male and female whales live in the deep parts of the sea.

Suan Ni is a creature from Chinese legends.

This Tang mirror is a gift from China.

He read the small print using a magnifying glass.

He attached a new reflector to his bicycle.

He was observing the stars with a telescope.

In physics class, I learned about the properties of convex mirrors.

He conducted an experiment using a spherical lens.

The speculum of this bird has a very beautiful color.