单词：non-protein nitrogen (npn)
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Janpnese weddings In the past, most Japanese participated in various Shintoist or Buddhist ceremonies, weddings funerals Buddhist. In recent times, the trend has been towards Christian and non-denomin
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Fukushima Plant Operator: Nitrogen Pumping Operation Going Well A plan to inject nitrogen into the containment vessel around reactor 1 at the Fukushima Daiichi power plant appears to be working, the plant owner said Thursday. Higher pressure levels h
VOA标准英语2011年(四月)
Looking to lead a more eco-friendly lifestyle? You could start by cutting back on meat. A new nitrogen footprint calculator shows you the impact your diet has on the environment. You may have heard of the concept of a carbon footprint. That's how muc
VOA标准英语2011年(三月)
一些听众朋友反应本期习题很难，希望能得到详细的讲解，那么今天就对第12课的习题讲解。 习题一：Please complete the following sentences. 1 我希望能与他促膝相谈，可是当我到他家时找不到他，我
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【课堂热身】 首先，let's have a review。在第十二课第一讲中我们讲到了let one's face fall 是某人自己使自己失望。 【今日课题详解】 那么现在我想说某人使得别人失望令别人大失所望，还是要用
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LOS ANGELES, March 6 (Xinhua) -- U.S. researchers have successfully used certain microbes to produce biofuels(生物燃料), opening a door to developing cheaper green energy. The discovery was made by researchers at the University of California, Los
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