The difference between C-grade and A-grade managers may very well be the difference between business success or failure. Between preserving the jobs of ordinary workers or losing them.
C 等和 A 等经理之间的差距很可能就是企业成败的区别，很可能就是在保住普通工人的工作或者让他们下岗之间的差异。
2
Last year the national program for playground safety gave the nation's playgrounds a grade of "C" for safety after visiting more than 3,000 playgrounds nationwide.