Above 5,490m is the realm of the heavy jets, since jet engines operate more efficiently at higher altitudes.

超过5490米是重型喷气式飞机的领域，因为喷气式发动机在更高的高度运行时效率更高。

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The boards of directors, all of which are still Brit-heavy, would have to be rejigged—unless board meetings were to become jet-lag experiments.

董事会已大部分英国化，需要重新调整，除非要将董事会议当作时差综合症实验。

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The paper describes the feature, mechanism of formation, research methods and possible applications of jet halo of mobile heavy metal above oil bearing formation.

叙述了石油层上方重金属元素的射流晕分布特点、形成机制、研究方法及其可能的应用。

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Overall, a total of about 900 were sold globally, but since 1991 the fast but heavy jet with aerodynamically advanced wings has had no major modifications.

FORBES: Aircraft Makeover: Certifiably As Good As New

Pham and several co-workers planned to jet to Las Vegas for a weekend of heavy partying after Slide's dinner in San Francisco last Friday.

FORBES: How To Celebrate--Silicon Valley Style

Britain invented the jet engine and radar and supplied much of the heavy cognitive lifting for the computer and biotechnology industries.

FORBES: SOIL FOR THE SEED