The mental health of humans in space has been extensively studied.

人类在太空的精神健康一直得到广泛的研究。

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Ruin probability of the insurance risk model has been extensively studied.

保险中有关风险模型的破产概率问题已经被广泛地研究。

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Of course, it has been extensively studied with ground-based observatories.

当然，它已被广泛研究的地面观测站。

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It, too, has not been extensively studied.

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Symmetry in particular has been studied extensively, not only in the Western World but also in hunter-gatherer cultures removed from mainstream media.

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"Bird colouration has also been intensively and extensively studied for a long time, " says Dr Galvan.

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