Figure 6. 20 illustrates a commercially available fringe multiplication and fringe sharpening apparatus mounted on a polariscope specially designed to facilitate these applications . 图6.20所示为一台市售的条纹倍增和细化装置，它安装在一台便于使用的专门设计的偏振光弹仪上。
Lying hidden at her waist , was a sharpened dagger 腰间别了一把磨得飞快的匕首。
He bought a device for sharpening old razor blades 他买了一个磨旧剃刀片的器具。
On holidays ， he kept himself busy sharpening his knives 假日时，他就老在磨刀。
Sharpens eyesight , promotes healthier and shinier coat ,助其羽毛健康及有光泽
He sharpened the edge of his knife on a grindstone 他在磨石上磨快了他的刀刃。
Absence sharpens love . presence strengthens it 离别使感情更深，相聚使感情更美。
You own your own meat cleaver and sharpen it 你有自己的确是的切肉刀而且你会磨它
You own your own meat cleaver and sharpen it 你拥有你自己的割肉刀并且磨快它
And the biades need to be sharpened every six weeks 还有冰刀每6个礼拜需要打磨一次
