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 发表:2002/12/23 15:17:45 人气:75       
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为何报纸纵撕易侧撕难？
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Newspaper is made up of tiny wood fibers. If you take a close look with a magnifying glass, you'll see that the fibers all line up in the same direction, up and down on the page. This gives the sheet of newspaper a grain.
When you tear the newspaper from top to bottom it tears evenly because you are tearing in the direction of the grain. But when you tear it from side to side, it tears unevenly because you're tearing against the grain.
报纸是由纤细的木质纤维构成的。假如你用放大镜仔细地观察一下，你就会发现所有的纤维都是以同一个方向排列的，按报纸版面从上到下地排列。这就使得报纸的纸张带有纹理。
当你从上到下撕报纸的时候，你可以均等地撕开，因为你是沿着纸纹的方向而撕的。
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It is weak and silly to say that you cannot bear what it is necessary for you to bear...........
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