He is working round the clock.

He was working on that project round the clock.

We enjoy picnicking in this park year-round.

The North American Aerospace Defense Command is responsible for the aerospace defense of North America.

He is an expert in computational linguistics and is involved in the development of artificial intelligence.

He was swimming freely as if he was a fish playing in the pot.

He is exactly in the state of 'A frog in a well does not know the vast ocean.'

He explained the importance of studying while young, saying 'If you do not study when you are young, it will be difficult to learn when you are old.'

He underwent surgery on the depressor septi nasi.

The single point of red in the sea of green in the park was her red dress.