众所周知，有四位老师明年将不会回来了。

It is ___common ___knowledge that four of the teachers will not be returning next year.

众所周知，过长的屏幕时间会影响睡眠。

It is ___common ___knowledge that excessive screen time can affect sleep.

该公司财务状况堪忧已成为行业内的常识。

That the company was struggling financially became ___common ___knowledge within the industry.