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
The strict requirements for block diameter and grade is difficult to meet when using ordinary blasting methods.
采用普通的爆破方法，难于达到对粒径和级配有严格要求的块度目的。
3
In order to improve the image of many city and grade, gradually replaced the ordinary white billboard three billboards.