地球可以钻透吗?地球里面究竟有什么?不仅你们这样想,科学家也想知道地球深处是什么样子。如果用一个巨大的钻头在地球上钻出一条隧道,再乘火车游览一番,一切都会看得清清楚楚了。小朋友,你知道这条隧道有多长吗?将近13000千米,轿车要疾驰4天4夜才能走完,就是坐喷气式飞机也得 Can the earth be drilled? What exactly is in the earth? Not only do you think so, but scientists also want to know what the depths of the earth look like. If you use a huge drill in the earth to drill a tunnel, and then take a tour of the train, everything will be able to see clearly. Children, do you know how long this tunnel is? Nearly 13,000 kilometers, the car must gallop for 4 days and 4 nights before it can be done