为提高发动机性能而进行的一系列调整。
剧烈运动前的一系列准备活动；热身。
为提高发动机性能而进行的一系列调整。
A series of adjustments to an engine in order to improve its performance
剧烈运动前的一系列准备活动；热身。
A series of preparations for vigorous exercise; a warm-up
为备战重要比赛而进行的比赛或竞赛(通常为表演性质)。
A match or race (frequently one exhibition in nature) contested as preparation for a match or race of high stakes.
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