，妈咪，有人出，有人进，惟一不变的是，这里贩卖快乐，也诉衷肠。
+ if matchTable[state]: print "confirmed: a match {rel[state]} characters ago"
，这一点在体育直播中也有详细论述
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setSpeed(currentSpeed - 1.0); // Starvation, back off
In most cases, just plain old method invocations will do. If two Business-Modules are on the same level (like e.g. “H&V Controller” and “H&V Simulator” from the example in point 4), invoking a public class’ method is just fine. It doesn’t even have to be an interface, although in some cases that’s handy.