例如，日益蔓延的荒漠化，土地的侵蚀，动植物物种的灭绝，海洋与河流道的污染等问题。

For example, the increasing spread of desertification, land erosion, the extinction of plant and animal species, pollution of Marine and river pollution.

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首先，新兴世界不断蔓延的经济放缓势头，正在侵蚀支撑资产价格稳定在高位的基础。

First, the emerging world's spreading economic slowdown is eroding a fundamental underpinning of high and stable asset prices.

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针对青铜器受土壤、水、氯化物等的侵蚀而产生锈蚀且容易蔓延的特点，研制出青铜器有害锈转化剂和青铜保护剂，可将有害锈转化为无害锈，然后再进行保护。

For the corrosion of bronze by the soil, water and chloride and its easily corrosionspreading, the bronze protection agent for harmful erosion conversion is studied and produced.

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