This apple is too hard to eat.

We decided to hold a meeting to determine the solution to this problem.

His foot got entangled in the rope.

Early rising is worth three pence.

We traveled to the southern island for summer vacation.

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.