America stepped into industrialize and urbanism in the mid 19th century.
世纪中期,美国进入工业化和城市化时期。
America stepped into industrialize and urbanism in the mid 19 th century.
世纪中期,美国进入工业化和城市化时期。
The amount of these chemicals has risen heavily in the past, as more areas of the world industrialize and new products are produced.
随着世界上更多地区的工业化和新产品的问世,此类化学物质的数量在过去的几年中迅速增长。
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