The rule of thumb used by zoologists is that a transmitter worn by a flying animal should weigh no more than a twentieth of the weight of the individual wearing it.

按照动物学家基本计算方法，飞行动物佩带的发射器重量应当低于其本身体重的1/20。

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Rossy had never flown for longer than ten minutes and had to calibrate his equipment and weight to perfection since even the addition of a few hundred grammes would have affected his flying ability.

此前罗西试飞时的时间从未超过十分钟，所以在这次飞行前他必须将机翼和体重都调整到最佳状态，因为即便增加几百克的重量都会影响他的飞行。

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In all cases, containers are supported on top of the concrete, slightly flying towards the exterior, offering a sense of balance and weight control.

不论在什么情况下，集装箱被下部的混凝土所支撑，并且略微向外悬出，由此得到了一种平衡的感觉。

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There is a flying surveillance drone the weight of a wedding ring, and one that carries 2.7 tonnes of bombs.

ECONOMIST: Robot ethics

Over and above that difference in style of flying, the two companies face exactly the same problem: weight.

FORBES: Boeing's Dreamliner and Airbus' Response

The logistics of flying could be as important as the shape, size and weight of the planes in the sky, they believe.

BBC: Sowing the seeds of tomorrow's aircraft