Double feed systems work well if the grid voltage and frequency is very stable.

当网格电压和频率很稳定时，双馈系统工作的很好。

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The World Health Organisation has predicted that meat consumption will double by 2050, and the increasing cost of animal feed is likely to rapidly inflate the price of meat before then.

世界卫生组织已经预测，肉类消耗在2050年将会翻倍，而且随着动物饲料成本越来越高，很可能在那到来之前肉类价格飞速上涨。

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The most complicated thing in the whole design is the feed system, which includes several parts to avoid double and even triple feed with the extremely long projectiles.

在整个设计中最复杂的事情是进料系统，其中包括几个部分，以避免重复，甚至极长的射三重饲料。

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Prior to Mincemeat, they had created a network of fictitious double agents to feed misinformation to the Nazis.

BBC: Operation Mincemeat: How a dead tramp fooled Hitler

And given that the krill (tiny crustaceans) that penguins feed on are also dependent on the ice for their own existence (they feed on algae on the ice) - some colonies affected by eroded floes could face a double-whammy of high fledgling mortality and restricted food resources.

BBC: Emperor penguins counted from space