1. The accuracy and efficiency of the sharpness function was a key to auto-focusing based on digital image processing technique. 准确有效的图像清晰度评价函数是采用数字图像处理技术实现自动调焦的关键。
2. Great view. I like the composition and perspective. Very good colors, light and sharpness. Good contrast between the trees and the earth. Good job! 伟大的景观。我喜欢它的构图和透视。非常棒的颜色，光线和锐利。树木和大地的很好的对比，干得不错！
3. If we can change the function of non-corneal bone marrow stem cells by introducing them into human corneas, we can possibly repair the loss of visual sharpness caused by mutations. 如果将非角膜骨髓干细胞引入到人类角膜能够改变它们的功能，我们也许能够修复由于突变造成的视觉敏锐性的丧失。
英英解释
n.
1. a quick and penetrating intelligence
2. the attribute of urgency
3. a strong odor or taste property
4. the quality of being keenly and painfully felt
5. thinness of edge or fineness of point
6. the quality of being sharp and clear
7. harshness of manner
