或者，你可以舔你的手指，在鞋尖上画一个十字，直到记号干了再看下鞋子。
Alternatively, you may lick your finger and make a cross on the toe of your shoe, and not look again at the shoe until the mark has dried.
在软件开发中，钻牛角尖是一种最受欢迎的消遣。
Chasing dead ends is a favorite pastime in software development.
他拣起一块尖尖的大砂岩石，试图尖头朝下地把它安置在更大的一块圆石上。
He picks up a large, pointy piece of sandstone and attempts to place it - point down - on a much larger round boulder.
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