And not all these conflicts are occurring across the border .

但不是所有的冲突都发生在边境上。

But the calculated chances of such events occurring are tiny .

但计算出来的情况是发生碰撞的可能性微乎其微。

One of the mega trends that are occurring .

其中有一个重要趋势正在发生。

A similar effect may be occurring today .

相似的影响可能会出现在今天。

The best contingency design prevents errors from occurring .

最好的权变设计可防止错误的产生。