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

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

He was respected as the tribal chief of the tribe.

The pelican has a large beak.

The hinge of this door is broken.

He believed that the black cat was a bad omen.

The doctor listened to my heart sound using a stethoscope.

The doctor said there is a problem with his jejunum.

Cheong fun, often eaten for breakfast in Hong Kong, is my favorite.

A beautiful swan was swimming in the park's pond.