英语翻译

问题描述:

英语翻译
a rope is cut off 4 times ,and each time a half part of the left is cut off,when the cutting comes to the 4th time,the length of the part left is 2 meters

一条绳子被切四次,每次剩余部分的一半被切掉,到第四次时绳子余下的长度为2米.后应是问原先绳子多少米.