Many environmental problems get worse as a country first industrializes, but once it reaches a certain level of income, the trend often reverses, producing a curve shaped like an upside-down U.
当一个国家刚刚开始工业化进程的时候，许多环境问题会恶化，但是一旦这个国家达到一定的收入水平，环境恶化的趋势就会反转，从而得出了一个被称为“Kuznets曲线”的倒U字形的曲线。
The final contours produced will generally be shaped similar to these trend curves.
将产生的等门牌线大致会沿著相同趋势。
Some new ideals on present situation and development trend of electrolytic coloring, and on increasing the output and benefit of aluminium shaped materials are proposed.
对电解着色的现状和发展趋势以及提高铝型材产量和效益提出了新见解。
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