联合他们的目标，是他们的基本任务——如果世界要避免的灾难无限制的扩散的话。
Connecting their purposes, however, needs to be their ultimate task if the world is to avoid the catastrophe of unchecked proliferation.
要帮助避免灾难性的气候变化，我们需要大规模的、经济有效的减排，而农业能够提供。
To help avoid catastrophic climate change, we need the large-scale, cost effective emission reductions that agriculture can deliver.
报告指出，碳抵消计划的问题在于，它减少的温室气体比科学家所说的避免灾难性气候变化所需的量要小的多。
The problem, said the report, is that offset schemes are delivering much lower greenhouse gas cuts than the science says are needed to avoid catstrophic climate change.
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