Some scientists believe that the rise in carbon levels means that the Amazon and other rain forests in Asia and Africa may go from being assets in the battle against rising temperatures to liabilities.
出自-2013年6月阅读原文
柯林斯高阶英汉双解学习词典释义
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累赘；负累；负担
If you say that someone or something is a liability, you mean that they cause a lot of problems or embarrassment.
例句
As the president's prestige continues to fall, they're clearly beginning to consider him a liability.随着总统的声望持续下跌，他们显然开始视他为负累。...what was once a vote catching policy, is now a political liability.这一曾经吸引选票的政策，如今成了政治上的负累。
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负债；债务
A company's or organization's liabilities are the sums of money which it owes.
例句
The company had assets of $138 million and liabilities of $120.5 million.这家公司资产为1.38亿美元，负债为1.205亿美元。