He is a child of older parents, and because his parents are elderly, he himself felt the responsibility of adulthood from an early age.

He fractured his trochanter.

I used dried small sardines to make delicious broth.

In this room, there is an ancient original form of a chair.

The history of the Empire of Japan is very interesting.

The characteristic of annelids is that their bodies are divided into ring-shaped segments.

This butterfly valve is used to control the flow of fluid.

He explained in detail about the structure of the sphenoid bone.

He drew a straight line using a T-square.

She is learning the grammar of the present progressive form.