He said that countries with weak health care systems are prime areas for disease out breaks.

他说那些医疗体系糟糕的国家是疾病爆发的主要地区。

It seems to be their prime area of competence, in fact: to stare at things.

实际上，干瞪眼几乎可以说是他们的专长。

And they're also in very prime areas in central Singapore.

而且它们也位于新加坡中部的黄金地段。

Flat mesa tops like this were the prime areas for development during the 18th, 19th and 20th centuries.

黑色：像这样的平坦台面是 18、19 和 20 世纪开发的主要区域。