Yet emerging countries are not immune to low-probability, high-impact disasters - internal, external or, more likely, some combination of the two.
但新兴国家并不是完全不受低概率、高冲击力的灾难——内部的、外部的，而更可能是两者相结合——影响。
Yet much more exotic vowels exist for example that carry tones: pitch that rises falls dips stays low or high and so on.
还有更富有异域风情的元音，比如带声调的平上去入等等。
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