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铅在1986年的主要变化是从1985年的情况大大逆转。去年西方世界铅矿产量下降了5.1%,而1985年则比上一年上升了4.2%,
The major change in lead in 1986 was a dramatic reversal from 1985. In the western world, the output of lead ore dropped by 5.1% last year, up from 4.2% in 1985,