会议的重点将是在不断变化的气候条件下，农业如何能够持续为世界不断增长的人口，尤其是贫困和弱势人口生产足够的粮食。

The focus will be on how agriculture can continue to produce adequate quantities of food for the world's growing population, and particularly the poor and vulnerable, in changing climatic conditions.

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在很多种情况下，特别是在那些不是很规范的条件下，该工具已经足够满足您的需求了。

In many situations, particularly, less formal ones, this is sufficient.

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在适当条件下，科学家们认为，这些电场可变得足够强大，以致它们可以驱动一个向上的电子雪崩。

Under the right conditions, scientists think, these fields can become strong enough that they drive an upward avalanche of electrons.

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