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来源：雅诚德英语网
The sea level which been rising since direct measurements began in 1870 at a rate that is now five times faster than it was at the beginning of recorded measurements.
1870年起，人们开始测量海平面上升的速度，现在的速度是那时的5倍。
The sea level which been rising since direct measurements began in 1870 at a rate that is now five times faster than it was at the beginning of recorded measurements.
1870年起，人们开始测量海平面上升的速度，现在的速度是那时的5倍。