问个缩写的意思,In 20 years the Chinese market has grown almost 20-fold.Total passenger traffic (arrivals and departures,domestic and international) is now the second-highest in the world,after America,having nearly tripled to 319m in the eight

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问个缩写的意思,
In 20 years the Chinese market has grown almost 20-fold.Total passenger traffic (arrivals and departures,domestic and international) is now the second-highest in the world,after America,having nearly tripled to 319m in the eight years to 2012.
319m的m是社么意思吗?

m是million百万.319m=3.19亿(人次)


这里指的应该是         2012年  民航     人数


Godfrey777 的回答 我很赞同。