全球各地所有排放出的二氧化碳，其中有大约三分之一都被海洋吸收了；二氧化碳和海水综合以后，形成碳酸。
About a third of carbon emissions is soaked up by the world's oceans, where it combines with seawater to form carbonic acid.
估计每年有3500万人死于非传染病，其中有大约1580万人，或者说有40%过早死于可预防的心脏病、中风、糖尿病及哮喘。
Of the estimated 35 million yearly deaths from noncommunicable disease, around 15.8 million, or 40%, are premature deaths from preventable heart attacks, strokes, diabetes, and asthma.
Dollar General的货架上摆满了大众可以消费得起的商品，其中有大约四分之一售价都不超过一美元。 凭借这种销售方式，该公司成功跻身为数不多的在当前经济衰退的条件下仍能保持盈利的企业行列。
WITH its shelves laden with affordable goods, a quarter of which sell for $1 or less, Dollar General has prospered like few other companies during the current recession.
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