Headlights blur past the Metropolis Building, a Madrid landmark. The Spanish capital is also its banking and business center.

首都也是其银行和商业中心。

youdao

This is because an image can have a varying Blur Width (depth of field) and the subject which is to be in focus is usually in the center.

这是因为图像可能有不同的模糊边缘宽度（景深）和在该中心通常有需要聚焦的被摄物体。

youdao

Or, try one thats slightly off-center to blur the bold edges of a square face.

或者尝试一下向一边偏分一点点，这样方脸的棱角就不至于太突出。

youdao