提高国家海上搜救能力成为非常现实并且具有相当挑战性的问题。
Improving the national SAR capability at sea is a realistic and challenging issue.
减轻地震风险、提高我国城市地震灾害管理能力成为非常现实并且具有相当挑战性的问题。
Mitigating urban earthquake disaster risk and improving earthquake disaster management capability is a realistic and challenging issue.
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.
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