This factory strictly controls the emission of hydrogen sulphide.

The troposphere is the lowest part of the Earth's atmosphere, and most of the weather occurs here.

Carina is one of the constellations in the southern hemisphere.

He always keeps in mind the phrase 'If one learns without thinking, it is a waste.'

He drew a beautiful scenery.

This seedling will become a big tree by next spring.

His description was so detailed, it felt as if I was there.

He is receiving treatment for leukemia.

His father died of Creutzfeldt-Jakob disease.

My mother goes to the hospital every day to nurse my grandmother.