He hit his occipital bone hard.

He said, 'The advantages of heaven and earth are nothing compared to the harmony among people,' emphasizing the importance of teamwork.

The prepositional case plays an important role in English grammar.

Prefix notation is a notation where the operator comes before the operands.

This input device is very easy to use.

She was diagnosed with placenta previa.

The issue of the previa vessel is a very important issue in obstetrics.

Each word and each phrase he said was deeply engraved in my heart.

His speech was full of hendiadys expressions, which captivated the listeners.

He is the main organizer of this event.