It's 500 Miles from here, or as near as makes no difference.
离这儿有500英里, 差也差不多.
By midday they had already travelled 200 Miles.
到中午为止, 他们已经走了200英里了.
The circumference of the earth is almost 25000 Miles/The earth is almost 25000 Miles in circumference.
地球的圆周长约为25000.