But a quality inspection system does not mean that each unit will always be up to the standard.

但是优良的品质检验系统并不表示每个部件都总能达到标准啊。

The current system that the dutch have built is up to the standard that a single flood can be expected in the west of the country about once every ten thousand years.

该国西部大约每一万年会发生一次洪水。