Li said current total area of underground in the city is about 40-50 million sq 重点翻译一下：Curren total
问题描述：
Li said current total area of underground in the city is about 40-50 million sq
重点翻译一下：Curren total
答
current 和 total 不是一起的.
是 total area 总面积
current是最近的,近期的
李说近年这城市的地铁总面积为40-50平方千米