But we were trying to address three key problems that plague digital projectors: lack of brightness, lack of contrast, and lack of sharpness.

但是我们一直试着解决困扰数码放映机的三大难题：亮度较低，对比度较差，清晰度不足。

youdao

I think that a lack of sharpness and a shift of goalkeeper let us down in the very early games and we let leads slip a few times, but we are starting to look better now.

我认为进攻乏力和换了门将是让我们前期成绩欠佳的主要原因，但我们现在更好了。

youdao

The Blues suddenly looked short of rhythm and their lack of sharpness was exposed when Benayoun strolled infield and slipped in Torres, the Spaniard spinning on a sixpence and lashing into the corner.

BBC: Chelsea 3-2 Liverpool (4-3)

The lack of noise and superb sharpness truly stood out here.

ENGADGET: Nokia 808 PureView impressions, camera showdown with the iPhone 4S and HTC One S