The blue whale is the largest living thing on the planet.蓝鲸是地球上体型最大的生物。The blue whale is the largest creature that has ever existed on earth.蓝鲸是迄今地球上存在过的最大的生物。The blue whale is the largest animal on Earth.蓝鲸是地球上最大的动物。The blue whale grows to over 30 meters long.蓝鲸可以长到三十多米长。