而且我们在动物模型上做过相当具有挑战性的手术，效果很好。
And we can do it in fairly challenging animal models and it works very well.
阿拉姆博士：这对身体来说，是个相当具有挑战性的环境。
Dr. ALAM: It's a fairly challenging environment for the body.
因此，断瘾可是相当具有挑战性的。
这将涉及一些人的再就业问题，在一些地区可能相当具有挑战性。
This will involve some redeployment of people, which in some regions could be quite challenging.
许多的姿势相当具有挑战性，让人赏心悦目。
Many of the postures are quite challenging and fun to watch.
许多的姿势相当具有挑战性，让人赏心悦目。
Many of the postures are quite challenging and fun to watch.
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