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translate these sentences into ChineseThe whole subject of happiness has, in my opinion, been treated too solemnly. It had been thought that man cannot be happy without a theory of life or a religion. Perhaps those who have been rendered unhappy by a bad theory may need a better theory to help them to recovery, just as you may need a tonic when you have been ill. But when things are normal a man should be healthy without a tonic and happy without a theory. It is the simple things that really matter.
在AutoCAD2007中，能否对填充的图案进行裁剪?
若要中断任何正在执行的命令，可以按 （ ）
图案填充的快捷命令为（ ）
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