1·Gasoline still contains lead, which is extremely poisonous to humans.
汽油仍然含有铅，对人体有剧毒。
2·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.
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。
3·In a study published in the journal Ambio, scientists found that lead levels in soil in the North-eastern United States had decreased markedly since the introduction of unleaded gasoline.
在《人类环境杂志》上发表的一项研究称，科学家们发现，自引进无铅汽油以来，美国东北部土壤中的铅含量已经显著下降。
4·The dominant lead ratio found in Greenland snow matched that found in gasoline from the United States.
在格陵兰的雪中发现了大量的铅，其含量与在美国汽油中发现的相当。
5·Lead has been banned more widely from gasoline — with only a handful of nations still using leaded fuel.
铅已经广泛地禁止添加到汽油中——只有极少数几个国家还在使用含铅汽油。
6·And that, on the whole, is what has happened, as the EPA has gradually copied measures pioneered in California, such as the elimination of lead from petrol (gasoline).
现在所做的基本上正是这样。环保局已逐渐借用了加州率先采用的一些措施，如去除汽油中含有的铅。
7·National average concentrations of lead in the air have fallen 93% since 1980, largely because of the phaseout of lead in gasoline, the EPA says.
自1980起，美国空气中铅平均浓度已下降了93%，主要缘于逐步停止在汽油中加入铅，环保署称。
8·Though the heavy metal lead is largely gone from our gasoline and paint, it still lies insidiously below us in the ground and occasionally drifts through the air as dust.
尽管金属铅大部分通过汽油和油漆排放出去了，但任有一部分藏在我们看不见的地下，有时候作为灰尘漂浮在空气中。
9·Rhenium is used to make high-temperature alloys for jet engine parts and in high-octane, lead-free gasoline.
铼可以用来制造喷气式发动机的耐高温合金部件，也是高能量的无铅汽油的成分。
10·During the 1960s and early 1970s, hundreds of American children were hospitalized each year with severe lead poisoning linked to exposure from lead in paint and gasoline.
在20世纪六、七十年代，每年都有数百名美国儿童因严重的铅中毒入院治疗，都与接触含铅涂料和汽油有关。