keep quality up的用法和样例：
- The shops are trying to keep quality up but prices steady.
- Keep quality first, hanker for perfection.
- I hope they get quality up to par before they come here, I'd hate to see another Excel or Yugo fiasco.
- To improve the function of foe plotter can make seismic acquisition quality up to a new level.
- Quality aim: keep quality of products the first place in the industry.The passing test for finished products reach at least 98%.No returns and counterclaim on our products.