He detonated the bomb.

He lectured to the students.

I will attend the lecture held at the university today.

This chemical substance volatilizes immediately when it gets hot.

In this chemical reaction, volatile substances are produced.

There are several thousand books in this library.

She fractured her pubis.

He adjusted the position of the hyoid bone to improve the quality of his voice.

I was surprised when I read the true record of this incident.

He was handling the carbine carefully.