二是更加有效，FCN 避免了由于使用图像块而带来的重复存储和计算卷积的

二是更加有效，FCN 避免了由于使用图像块而带来的重复存储和计算卷积的问题。

Results (English) 1:

The second is more effective. FCN avoids the problem of repeated storage and calculation convolution due to the use of image blocks.

Results (English) 2:

Second, more effectively, FCN avoids the problem of repeated storage and calculation of refrcurring due to the use of image blocks.

Results (English) 3:

Second, FCN is more efficient, which avoids the problems of repeated storage and convolution calculation due to the use of image blocks.