在R中以分隔符的形式读取具有多个空间的文本文件

I have big data set which consist of around 94 columns and 3 Million rows. This file have single as well as multiple spaces as delimiter between columns. I need to read some columns from this file in R. For this I tried using read.table() with options which can be seen in the code below, the code is pasted below-I have big data set which consist of around 94