The flag is a sign of the patriotism of the powersThe flag is a sign of the patriotism of the powers
The sign of the number pi is made up of black digits on the background of a row of gray digitsThe sign of the number Pi is made up of black digits on the background of a row of gray digits
Показатель, примета, знак, по к-рым можно узнать, определить что-н..