碎片来自125英里长的小游星，由微弱的碳和大量钙、铁组成。
The debris, which came from an asteroid that was once 125 miles long, showed little carbon and high levels of calcium and iron.
某发动机用游星齿轮轴承在工作过程中发生失效，保持架断裂，滚棒、滚道磨损。
The planetary gear bearing of an engine failed in service with the fractured cage and the wearing rollers and raceway.
近期，酒店荣获由全国旅游星级饭店评定委员会颁发的《绿色旅游饭店金叶级》证书。
Therefore, hotel recently received Golden Leaf certificate of China Green Hotel which was awarded by China Tourist Hotel Star-Rating Committee.
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