land degradation是什么意思 land degradation怎么读
land degradation的用法和样例
- The salinization is one of the main types desertificated and the land degradation.
盐渍化是荒漠化和土地退化的主要类型之一。 - Land degradation and landscape ecological construction in Liaoning Province.
辽宁省土地退化与景观生态建设。
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