The observational work is carried out on a range of telescopes.

观测工作是借助于各种望远镜来进行的。

《柯林斯英汉双解大词典》

The subsequent two decades have seen much observational and theoretical work aimed at this problem.

接下来的二十年中，有许多观察和理论的研究是专注在这问题上。

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Others point to observational and anecdotal evidence that homeopathy does work and argue that it should not be rejected just because science has not been able to explain it.

另外一些人却指出了通过观察或者一些传闻能证明顺势疗法确实有效，并认为它们不该被抛弃只因为现有科学无法解释它。

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While in grad school, I continued to work on all sides of the fashion industry, always feeling like an outsider doing inside observational work, and with a hyper-awareness of the power of aesthetic manipulation and body consciousness.

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It goes on to pay tribute to news reels and propaganda films and expressionist shorts and most particularly the work of John Grierson who did this observational documentary film making.

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Previous work by Dr Ioannidis, on six highly cited observational studies, showed that conclusions from five of them were later refuted.

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