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

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

Zero is used to represent absolute zero.

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

He underwent surgery on the depressor septi nasi.

Their home is always filled with amiability, to the point where everyone envies them.