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pH - a measure of how acid or alkali a solution is. As the pH gets lower, the solution is more acid. At a pH of 7 the solution is neither acid nor alkali. pH is the inverse of the logarithm of the con
医务英语
After I took office as mayor of a small Kentucky city, an unfortunate incident precipitated some hateful phone calls to my home. One night while I was conducting a city-council meeting, my wife answer
英汉幽默故事选读
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Batteries of the future need to deliver more energy, and they need to be smaller. Researchers at MIT think they have developed a technology that can, a
Scientific American(四)月
After I took office as mayor of a small Kentucky city, an unfortunate incident precipitated some hateful phone calls to my home. One night while I was conducting a city-council meeting, my wife answered the phone. Is this the home of Bert May, the ma
趣味英语
一、rather than用作连词，连接两个平行结构。既可以表示主观愿望上的决择，与其宁可，也可以表示客观程度上的差异，与其说是不如说是。例如： 1、接代词 1）I,rather than you,should do the work.
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