广大性 meaning in Chinese

extensity

But what distinguishes this war in china is its especially protracted and extensive character , which will set a record in history
但其在中国的特点，是其特殊的长期性和广大性，这将是突破历史纪录的东西。
In its extraordinary breadth and protractedness , china ' s anti - japanese guerrilla war is without precedent , not only in the east but perhaps in the whole history of mankind
中国的抗日游击战争，就其特殊的广大性和长期性说来，不但在东方是空前的，在整个人类历史上也可能是空前的。