日期:
来源:雅诚德英语网
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.
自二十世纪六七十年代以来,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.
自二十世纪六七十年代以来,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。