三、The method relies on measuring how chemical variations in drinking water showup in peoples hair.
分析主干:The method relies on...
本句难点在理解measuring 的宾语,它就是how 引导的从句。从句的主干是:how variations... show up...。
译文:这种方法的依据是测量饮用水中的化学物质在人的头发中的变化。
四、Global warming may or may not be the great environmental crisis of the 21st century, butregardless of whether it is or isntwe wont do much about it.
分析主干:Global warming may or may not be the crisis... but we wont do much...
句子主干是个并列句,由but 连接的两个分句之间是转折关系。前一个分句用了复合谓语,是肯定形式和否定形式并列的结构,利用了情态动词来省略。后一个分句包含一个复杂介词regardless of 引导的短语,表示不管,of 后面接了一个whether 引导的宾语从句。
译文:全球变暖有可能是21 世纪巨大的环境危机,也有可能不是,但是无论它是或不是我们都对此无能为力。
五、A survey found an overwhelming pessimism about privacy, with 60 percent of respondents saying they feel their privacy is slipping away, and that bothers me.
分析主干:A survey found an pessimism...
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