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.

He is majoring in anthropology at university.

I am a proud Earthling.

He is Taiwanese and is interested in Japanese culture.

My grandmother is being seen by a specialist in geriatrics.

Next year, my younger brother will participate in the coming of age ceremony.

The police rounded up the criminals.

He is majoring in humanities at university.