“众所周知”用英文怎么翻译？

众所周知，英语是：As we all know。
例句：
As we all know, some of today's children are overweight because they eat too much fast food.
众所周知，今天很多孩子都超重了，因为他们吃了太多的快餐。
详细解释：
all 英[ɔ:l] 美[ɔl]
adj. 全部的; 一切的; 各种的; 极度