直角90度,开水100度,所以直角没烧开。
开水100度,直角90度,所以开水是钝角。
There are 10 kinds of people in the world, one knows binary, the other doesn't.
Cronos87
A passionate developer who enjoys experimenting with every technology | “They did not know it was impossible so they did it”
― Mark Twain
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