That liquidity flowing back into the start-up ecosystem will arguably fuel the boom.

回流到初创企业生态系统的这些资金无疑将促进繁荣。

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But as they flew up the coast of Mexico, the engine on the back of the plane failed. Fuel had stopped flowing to it.

但是，当他们飞过墨西哥海岸的时候，后部的引擎熄火了，燃料也不再进入它。

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Even though fuel cost less than 50 cents per gallon back then, few airlines were willing to give up fuel efficiency for the sake of speed.

甚至燃料的消耗减少了50％，也很少有航空公司愿意为了速度而放弃燃料效率的。

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On a larger scale, stationary fuel cells are providing back-up power for hospitals, military bases, banks, and telecoms (especially to keep cell towers online).

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Dr. Ruth Berggren, an infectious disease specialist at Charity Hospital, said the facility had electricity until back-up generators ran out of fuel Tuesday.

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The back-up power supply includes six diesel generators with ten days of fuel.

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