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1·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》

2·In the observational studies we found that some of the B vitamins were beneficial.

在观察性研究中，我们发现一些维生素 B 是有益的。

3·Observational assessment techniques have become much more sophisticated, reducing the limitations just presented.

观察性评估技术已经变得更加复杂，它减少了刚刚提出的限制。

4·Cultivating drawing talent can become an essential tool to improve people's observational skills in fields where the visual is important.

在强调视觉重要性的领域，培养绘画才能可以成为提高人们观察能力的重要工具。

5·With these sophisticated observational assessment and electro-physiological measures, we know that the neonate of only a few days is far more perceptive than previously suspected.

通过这些复杂的观察、评估和电生理仪器的测量，我们可以得知，刚出生几天的新生儿的感知能力超乎我们之前的猜测。

6·Observational studies are often misleading.

观测研究常常会误导。

7·The style is more observational than polemical.

它是观察式的，不是辩论式的。

8·The skill of observational humor puts you in the present moment.

能通过观察而作幽默的能力会使你融入现场氛围当中。

9·Could data mining soon replace serendipitous observational discovery?

未来，数据挖掘是否会代替偶然观测的发现？

10·As bizarre as this model sounds, it has some reasonable observational support.

这个模型听起来虽很奇异，但却也有些观测结果证明其合理性。

(1)observational data观测资料，观测数据

(1)observational study观察研究；观察性研究