问题描述：
driving his head back
Anthony saw the black steel edge of the snowplow blade hit the young child under the chin,driving his head back and scraping over his face.Instantly,blood flashed across the boy's forehead.
Anthony saw the black steel edge of the snowplow blade hit the young child under the chin,driving his head back and scraping over his face.Instantly,blood flashed across the boy's forehead.
问题解答：
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