单词：airfoil effectiveness
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Topic1-Nine years after the plastic-bag ban In 2008, China initiated a national ban on the use of free plastic bags in supermarkets. 9 years later, the effectiveness of the ban is under fire. Environmentalists, congressional delegates, and even state
英语角-圆桌会议
Exercise 5-1: Sounds Comparing L with T, D, and N For this exercise, concentrate on the different ways in which the air comes out of the mouth when producing each sound of L, T, D, and N. Look at the drawings included here, to see the correct positio
美式英语正音训练
optimal effectiveness 最大成效 英文释义 An expression describing a condition in whichoperations are at their most efficient 例句 Some managers believe that six is the right number of members on a work team for optimaleffectiveness.有些经理
每日商务英语
One of the biggest challenges in fighting tuberculosis comes from new drug-resistant(抗药性的) strains of the disease. And one of the main reason those strains have developed is that TB patients often don't take their standard, 14-pill, course of
英语新闻
今天我们要学的词是untested。 Untested, 没有经过测试的，没有经过考验的。最近，香港和印度等亚洲地区陆续发现禽流感。为了预防禽流感对人类的威胁， Several human vaccines for bird flu have been d
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