引进技术以削减烧煤排出的二氧化碳，或以较清洁能源取代煤炭，二者均很昂贵，故问题是中国能在多短时间内达成上述目标。

So the question is how fast China can introduce technologies to reduce carbon emissions from coal-burning, or else replace coal with cleaner forms of energy, both of which will be expensive.

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这项发现是基于对超过100,000人遗传信息统计的基础上，故研究者们能够鉴定出对心脏健康有潜在影响的极微小变异。

Because the findings were based on genetic information gathered from more than 100,000 people, researchers were able to identify subtle variations that could potentially affect heart health.

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由于投机者赌日本出口商在其跌至7个月低点(兑美元)后买进日元，故日元一路走强。

The yen also strengthened on speculation Japanese exporters bought the currency after it fell to a seven-month low against the dollar.

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