在二十世纪六七十年代，铅沉积就在土壤和雪中不断累积，这主要是美国的含铅汽油排放的后果。
Lead deposits, which accumulated in soil and snow during the 1960s and '70s, were primarily the result of leaded gasoline emissions originating in the United States.
西方在二十世纪六七十年代兴起的多元文化教育是国家民族教育的基本理念。
Originated in the sixties and seventies of the 20th century in the West, the multicultural education is the basic ideas of China's minority nationality education.
他告诉BBC的安德鲁·马的节目说：“我个人认为脱离欧元区会让我们回到二十世纪六七十年代。”
"I personally think [leaving the eurozone] would take us back to the 1960s or 1970s," he told the BBC's Andrew Marr programme.
产生于二十世纪六七十年代的女性主义戏剧是美国文学史上一个重要的流派，也是当代美国文学批评的研究热点之一。
The feminist play is an important literary school in America, which was formed in the late 1960s and early 1970s and is now one of the focuses in contemporary literary criticism.
产生于二十世纪六七十年代的女性主义戏剧是美国文学史上一个重要的流派，也是当代美国文学批评的研究热点之一。
The feminist play is an important literary school in America, which was formed in the late 1960s and early 1970s and is now one of the focuses in contemporary literary criticism.
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