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Earlier this year, British explorer Hadow and his team trekked for three months across the frozen Arctic Ocean, taking measurements and recording observations about the ice.
2016年6月六级真题（第一套）听力 Section C
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Furthermore, they say, it is the best way for researchers to gather the range of observations that are necessary to speed up discoveries or to identify large-scale trends.
2017年12月六级真题（第二套）阅读 Section B
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Her observations helped dismiss the popular belief that insects spontaneously emerged from mud.
2018年12月六级真题（第二套）阅读 Section B
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Satellite observations and submarine surveys over the past few years had shown less ice in the polar region, but the recent measurements show the loss is more pronounced than previously thought.
2016年6月六级真题（第一套）听力 Section C
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Some of their earliest observations have to do with the level of self-control the youngsters displayed.
2016年6月六级真题（第一套）听力 Section C
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The results of her decades worth of careful observations were detailed paintings and descriptions of European insects, followed by unconventional visuals and stories of insects and animals from a land that most at the time could only imagine.
2018年12月六级真题（第二套）阅读 Section B