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1·I consider this to be of dubious value for two reasons?

我认为这是令人怀疑的价值有两个原因？

2·For writing—being a writer—always seems to the writer to be of dubious value.

而写作——乃至做一个作家——则总是让你怀疑它的价值。

3·At best, they suggest avenues of research, but by themselves they are of dubious value.

他们最多不过是建议了研究方向，但他们自己也不知道是否正确。

4·Much news or information in the net is of dubious value and may be deliberately or misleading.

很多网上新闻和信息并不具有很高的可信价值，本身也许就是蓄意捏造的错误或是带有误导性的信息。

5·Animal testing is expensive and can be of dubious value, and scientists would prefer cheaper and more reliable alternatives.

动物实验成本高昂，而且不一定有价值，科学家更愿意采用便宜可靠的替代方法。

6·Some suspect that its opposition stems from the fear that many expensive and profitable pills would be found to be of dubious value.

一些人猜测反对的原因是担心很多价格昂贵获利丰厚的新药很可能物非所值。

7·Moreover, bribes in India used to be of dubious value, since the recipient would often prove unable or unwilling to fulfil his side of the bargain.

并且，在印度行贿的作用通常遭人质疑。 因为受贿人很有能无法或是不愿履行自己当初的约定。

8·Many senior academics opposed the move, citing derisory graduation rates, crushing levels of debts and degrees of dubious value from some for-profit American companies.

许多高级学者反对这个行为， 认为这是由一些以营利为主的美国公司带来的“低得可笑的毕业率，高得离谱的债务和一文不值的学位”。

9·Animal studies can sometimes be of dubious scientific value, since different species react differently to the same procedure.

动物研究的科学价值有时值得怀疑，因为不同物种对同一操作有着不同的反应。

10·It is expensive and can be of dubious scientific value, since different species often react differently to the same procedure.

这种实验花销昂贵且可能会得到说服力差的科学价值，因为不同的物种对同种科研程序的反应经常是不同的。