amelioration造句

One of the most startling proposals for amelioration, in fact, came from Wall Street.
实际上, 最令人注意的改良建议之一出自华尔街.

I've heard that Liebig has made some wonderful discoveries in the amelioration of soils.
我听人说利比黑在改善土壤这方面有过很了不得的发现.

This paper studies the constitute measure, the emulation and amelioration of system.
研究了系统的建立方法及软件的仿真与改进.

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