He is deeply interested in the theory of Trotskyism.

This cake is generously filled with strawberry cream.

Khartoum is the capital of Sudan.

My hand got caught in the door, and it hurt.

The center of this plate is sunken.

Plants of this kind are collectively referred to as 'cacti'.

Mr. Zhai is my best friend.

He has a weary character.

It is said that secondhand smoke has a negative impact on health.

My younger brother goes to a school for special needs.