What it says is if s is a closed surface — Remember, it is the same as with Green's theorem, we need to have something that is completely enclosed.
它说的是，如果s是一个封闭曲面，这和格林定理是一样的，我们需要完全封闭的。
"Starbucks has never succeeded in any market where it has had strong competition, " he says. "They've just closed a whole bunch of stores in Australia.
“星巴克从未在有强大竞争对手的市场中取得胜利，”他说：“他们刚在澳大利亚刚关闭了许多连锁店。
Stokes says if I have a closed curve in space, now I have to decide what kind of thing it bounds.
空间上存在一条闭合曲线，我需要看出它是什么的边界。
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