The reading material argues that fuel-cellengines have several advantages over internal-combustion engines and willreplace them. The lecturer, however, holds the view that it is much lessoptimistic than what the reading indicates for the following reasons.
First, although hydrogen is a renewableresource, its producing procedures are too demanding. We cannot utilize ituntil it becomes the pure liquid, which requires minus 253 Celsius degrees(这个好强大,我根本来不及记录这些细节) and can only bemade artificially. Besides, storing(storage of the hydrogen)is a problem too.
Second, despite less polluted gas emitted from fuel-cell engines(“releaseless polluted emission”这是一个替换写法 ), there may be more pollution when the hydrogen is produced. This kind ofsource needs to be purified before use which burns much coal as well as oil.Therefore, hydrogen is not as clean as what we might think(as we think,这样就好了吧).
Third, fuel-cell engines should be made by expensive platinum(“白金”,好吧,这个词我查了才认识). So far, all attempts to find alternative chemicals to(for) platinum have turnedout to be a failure. That makes it less likely to be put into market. 1 字数有点少:如果有时间的话,将reading里的内容适当的联系一点吧,可以增加一些字数。 2 要点都写出来了,并且,你对听力中的细节记录很详细。 3 如果可以象征性的写一个结尾段的话,就会更好,否则,这样不太像一个完整的文章。 4 赞一句,你对细节的把握整的很好,全篇之后竟然没有任何的拼写错误。要向你学习! |