结核病曾经是人类的第一大杀手，但随着抗菌素的广泛应用，结核病的危害直线下降，在上世纪六七十年代人类颇有“大获全胜”的感觉。

TB was once the largest killer of mankind, but with the extensive use of antibiotics, tuberculosis fall hazards in the sixties and seventies of the last century quite human "victory" feeling.

youdao

Okay, so in oil we all know that in the late 60s, early 70s, OPEC was formed precisely to restrict quantity among the major oil producing countries, and very quickly we see companies take other countries take advantage of this to start producing oil profitably.

众所周知在上世纪六七十年代,为了限制石油的产量,主要产油国成立了OPEC组织,但是很快就有一些国家,利用这点来产油获利

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