I eat lunch at twelve o'clock.

He has been committing misdeeds for many years, but finally the time for repayment has come.

Greenwich Mean Time is the standard that determines the time of the world.

He likes to take a walk in the park at dusk.

He respected the man so much that he would drink his nail clippings if he could.

He was working on that project round the clock.

Due to his somnambulism, he may walk around unconsciously in the middle of the night.

He is working round the clock.

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