Chlorine detonating gas is very dangerous, and it requires careful handling.

The leaf was floating on the surface of the water.

The clown is a part of the circus, performing various acts to entertain the children.

There are many beautiful Formosa Sweetgum trees planted in the park.

He sealed the letter.

He received a tetanus vaccination.

This ancient document states that the power of the ancients was sealed.

He sealed the old book.

Discord has arisen between them.

All his efforts were in vain.