任天堂总裁岩田聪在网上的一封信中表示，这还是任天堂首次出现新产品发布不到六个月内便宣告降价的情况。
President Satoru Iwata said in an online letter it was the first time Nintendo has cut prices so much within the first six months of a product's launch.
地热田所产生的二氧化碳量与相对清洁的天燃气火电厂相比大约只有其二氧化碳排放量的六分之一。
Geothermal fields produce only about one-sixth of the carbon dioxide that a relatively clean natural-gas-fueled power plant produces.
科学家们在一块六英里见方的试验田内进行了勘测，他们发现那些有机碳来自筑造防洪大堤取土用的浅塘，有机碳化合物沉淀至塘底并慢慢渗入地下。
Using a six-square-mile test plot, they found that the organic carbon comes from shallow ponds that were dug to provide soil for flood protection.
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