He pointed to the location on the map with his index finger.

The center of this plate is sunken.

Please teach me how to calculate the area of this circular sector.

He said, 'It's difficult to make a life,' explaining the phrase 'When a man steps over the threshold, he has seven enemies.'

He said, 'Man shall not live by bread alone,' teaching me that spiritual satisfaction is also important.

Three countries formed an alliance.