标题: [求助]双重否定句子的理解 [打印本页] 作者: joywzy 时间: 2003-6-2 06:43 标题: [求助]双重否定句子的理解 The number system based on the number ten, in the absence of which one hundred years would not have the appearance of being a significant period of time, is by no means the only one that people have created.