We should take our hats off to his efforts.

In this chemical reaction, cyclooctadecane is the main product.

Octacosane is a compound often used in organic chemistry.

Octatriacontane is a type of hydrocarbon in organic chemistry.

I presented her with flowers.

I like to exercise outdoors.

It is said that his wealth amounts to vast numbers.

His company is making vast profits.

I entrusted my dog to him.

He checked whether he remembered or not.