279. It is well known to everyone that... 众所周知……
It is well known to everyone that air and water are very important to men.
众所周知，空气和水对人类非常重要。
It is well known to everyone that we human beings have a common ancestor.
众所周知，我们人类有一个共同的祖先。
It is well known to everyone that the earth turns around the sun.
众所周知，地球绕着太阳转。
