例句與造句

1. The nets accomplish this by selectively detecting ( after much trial and error, guided by error-correcting feedback ) the invariant features that are shared by the members of the same category and that reliably distinguish them from members of different categories; the nets learn to ignore all other variation as irrelevant to the categorization.
2. It's difficult to find correcting feedback in a sentence. 用correcting feedback造句挺難的