This block of code defines a GEvent.addListener which listens for any map movement (drag, drop, zoom, pan, map type change) and defines the appropriate action to take should it occur.
这段代码定义一个GEvent.addListener ，它监听所有地图运动（拖、放、缩放、摇移、地图类型切换）并定义相应的操作。
Conclusion: Reversible oviduct block contraception is a new method, its blocks being unlikely to drop out; safe and reliable, with good reversibility and high renewal rate of pregnancy.
结论：输卵管置管可复性节育术方法新颖，不易脱落，安全可靠，可复性好，复孕率高。
Conclusion: Reversible oviduct block contraception is a new method, its blocks being unlikely to drop out; safe and reliable, with good reversibility and high renewal rate of pregnancy.
结论：输卵管置管可复性节育术方法新颖，不易脱落，安全可靠，可复性好，复孕率高。
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