She is learning the grammar of the present progressive form.

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

He drew a straight line using a T-square.

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

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

The Y chromosome carries the genes that determine maleness.

I inherited my X chromosome from my mother.

This poster is designed in rounded sans-serif.

She has trypophobia, and feels discomfort when she sees things with many holes like beehives or corals.

He experienced nantaimori for the first time.