The force of gravity makes things fall.
地球的引力使物体下落…
The force of Gravity makes things fall to earth.
地球引力使物体落到地面上。
The force of gravity makes things fall to ground.
重力使物体都落到地上。
His strange habit makes sense when you consider that he's an environmental scientist who studies how to reduce litter, including things that fall off garbage trucks as they drive down the road.
他是一位研究如何减少垃圾的环境科学家，其中包括研究减少垃圾车行驶时掉下来的东西，当你考虑到这一点，自然就能明白他为什么会养成这种奇怪的习惯了。
RD: Something to do with a puzzle being solved - things fall into place and you see a different way of looking at things which suddenly makes sense.
理查德·道金斯：谜题得以解决，尘埃落定之时，你会以一个完全不同的视角看待那些突然间不言自明的事物。
Things start to fall apart. The grid is subdivided in such a way that makes navigation and orientation difficult (from a mapping point of view).
图上的事物这时开始出现分离，这种子划分下，导航和方向辨认也变得愈加困难(从一个地图的角度看)。
Things start to fall apart. The grid is subdivided in such a way that makes navigation and orientation difficult (from a mapping point of view).
图上的事物这时开始出现分离，这种子划分下，导航和方向辨认也变得愈加困难(从一个地图的角度看)。
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