Mess-free: : Open the tin and put a band vertically around the paint pot to use as a rest for the brush when it is not being used.
避免脏乱：打开罐子，在油漆罐上垂直地绕上一圈橡皮筋；不用刷子的时候，把刷子放在橡皮筋上。 。
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This is what happens in free market democracies, Friedman tells us—an unacceptable mess ensues when there are no expert overseers to direct our affairs.