时间:2019-01-10 作者:英语课 分类:与美国小学生一起学英文第6册


英语课

   Gravity 1 重力


  What happens if you drop a book? 如果你丢一本书会发生什么?
  Absolutely, it will fall down to the floor. This is called gravity. 很显然,书会掉到地上。这就叫做重力。
  Gravity pulls from the center of the Earth. 地心引力来自于地球中心。
  So things fall down to the ground because of gravity. 所以,物体落在地面上都是因为重力。
  Do you know what would happen without gravity? 你知道没有重力会怎么样吗?
  Everything would float around in the air. 所有物体都会漂浮在空中。
  When you fly high away from the Earth into space, you will float around. 当你飞离地球到太空时,你就会漂浮起来。

n.重力,引力,地心引力
  • An apple falls down because of gravity.由于重力的关系,苹果往下掉。
  • The stone rolled down the mountain by gravity.这块石头由于重力作用而滚下山。
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