This will traverse the tree (in logarithmic time) and find the closest to the root node's summation of studio movies.
这个调用将（以对数时间）遍历树，查找最靠近树根节点的电影公司电影汇总。
The computation time of the method can be obviously reduced because of the higher computational efficiency of CC and FMM than that of direct summation.
由于循环卷积和FMM的计算效率明显高于直接求和，故整个算法的计算时间明显减少。
Man has become the summation of all kinds of social relations during the labour course at last, at the same time, labour has pregnanted ethics (morality).
人在劳动过程中最终形成各种社会关系的总和，劳动同样孕育了道德。
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