Leaddeposits, which accumulated in soil and snow during the 1960s and '70s, were primarily the result of leaded gasoline emissions originating in the United States.
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。
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Leaddeposits, which accumulated in soil and snow during the 1960s and 70s, were primarily the result of leaded gasoline emissions originating in the United States.
二十世纪六、七十年代，土壤和积雪中沉积的铅主要是因为美国含铅汽油的排放所导致的。
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The progressive result is an accumulation of fatty deposits called plaque that can rupture or have their caps shear off, causing clots that lead to heart attacks.