不过，化学品溢出、泄漏和倾倒，或核溶化物等其他突发公共卫生事件，也可能同样具有全球效应。
However, other public health emergencies such as chemical spills, leaks and dumping, or nuclear melt-downs may similarly have global effects.
前几天我给男孩们演示一个化学实验，还没等我意识到什么，混合物就冒泡溢出，到处都是了。
The other day I was showing the boys a chemistry experiment — before I knew it, the mixture was bubbling over everywhere.
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