然而，榆中县受制于自身的气候，限制了他们蔬菜经济的扩大。
Yet the county is restrained by its climate that limits the vegetable economy from scaling up.
这次会议原本打算达成一个新的全球气候变化条约，以限制温室气体排放，取代1997年的京都议定书。
The conference had originally been intended to produce a new global climate change treaty on limiting emissions of greenhouse gases that would replace the 1997 Kyoto Protocol.
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