例句與造句

1. Broken foreign material is an important factor in grading and classification of grains.
2. Rims, nicks, polishing, scratches and other forms of wear are considered factors in grading a coin.
3. Dahne, a staff writer for " SpoilerTV " gave the episode an A-, commenting that, as she had written her review after the series'cancellation, the cancellation was a deciding factor in grading the episode.
4. It's difficult to find factor in grading in a sentence. 用factor in grading造句挺難的