投资高效工厂能节余很多宝贵的碳信用额度，可以用来卖给那些更富有、更浪费的国家。
By investing in efficient plant it could generate lots of valuable carbon credits to sell to wealthier, more wasteful nations.
获得限额的国家不是必须激活信贷额度，除非它自己需要；但授信的存在会使投资者有信心能够经受得住风暴。
The country would not have to draw down the line of credit unless it needed to; but the credit's existence would give investors confidence in its ability to ride out the storm.
国际货币基金已经承诺提高给与可能陷入危机的国家的预防性信用额度。
The IMF has already offered to increase its precautionary credit lines for countries that could end up in trouble.
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