德国所有的四家核电运营商正在努力，用可再生能源以及气电发电厂来替换他们的核发电能力(这是合计发电总数的四分之一)。
All four big German operators are working hard to replace their nuclear capacity (about a quarter of their combined total) with renewable power or gas-fired plants.
合计350万(剔除重复计算后)——占每年儿童死亡总数的三分之一。
In all, that is 3.5m deaths (once you strip out double counting) -one-third of total child mortality.
平均值、合计和其他类型的汇总数据无法通过仅仅使用一个映射函数来实现。
Averages, summations, and other summary types of data are not possible with just a map function.
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