面对这种复杂性，传统方法常常束手无策。
Facing this kind of complexity, the traditional methods feel helpless.
现在是时候面对这种复杂性的时候并应强化同时合理化国际环境条约而非放弃。
It is time to face up to that complexity and strengthen and streamline, rather than abandon international environmental treaties.
这个问题所费不赀，而且我们的许多系统都要面对这种复杂性，这样花销更是多得多了。
The costs are not insubstantial, and they can be multiplied across as many of our systems as come into contact with this complexity.
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