Drought is the biggest disturbance of dependable crop and heavy-producing grain output to the irrigation district.

通过这些指标说明干旱是关中灌区难以实现稳产、高产最大的障碍。

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Today, accelerators producing X-rays, protons, neutrons or heavy ions can be found at every major medical center in the U.S..

如今，全美每个主要医疗中心均具备产生X光、质子、中子或重离子的加速器。

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In 1847 the farm's founder, Sir John Lawes, described its soil as a heavy loam resting on chalk and capable of producing good wheat when well manured.

1847年农场的创办人，劳斯爵士，将这里的土壤描述为一条狭小田地上面能产出很多粮食的田地，如果好好施肥能产出更多。

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Heavy rain means that the fighting is now more subdued and largely confined to the diamond-producing areas.

ECONOMIST: Sierra Leone