The aircraft-maker said it plans nearly to double production of the fuel-efficient, wide-body jet over the next six months and expects to break even by the end of the decade.

航空市场声称计划在未来的六个月内，加倍生产此类节能，宽体喷气式飞机。并希望在2020年底实现盈亏平衡。

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Jet lag is caused because the body clock does not readjust immediately to the time change.

时差是因为生物钟没有立即适应时间的改变而引起的。

《柯林斯英汉双解大词典》

They hope the model offers a simple way of explaining how a typical body might recover from jet lag with no intervention.

他们希望这个模型可以提供一个简洁的方式，来解释正常人的身体如何在没有外在干预的情况下，把时差倒回来。

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Boeing 737s compete mainly with Airbus's A320s in the short-to-medium range, narrow body jet market.

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Although Boeing and Airbus dominate the global narrow-body jet market, the competition is making gains.

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With 866 aircraft on order, the 787 Dreamliner became the fastest-selling wide-body jet in history.

ECONOMIST: Business travel