如果把纸的纹路弄反了，纸就会起皱，折边也不整齐，书还总是会自己合上。
If you have the grain going the wrong way the paper will ripple, the fold will not be clean and the book will want to close itself.
尤其是字体变小，本来圆滑的字边和斜线看起来不整齐，字母本身的空间和字母与字母间的空间会拧在一起，细线消失。
Especially at smaller point sizes, rounded edges and diagonals look ragged, Spaces within and between letters close up, and fine lines disappear.
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