To express the constraint,"Penguins can't fly period," you make sure that no such function is defined for Penguin objects:.
如果航空母舰上的飞机不能飞行,那么航空母舰就不能从空中投射军事力量。
If planes on an aircraft carrier can't fly, that carrier can't project its military power from the air.
大多数的鸟类学者说这些鸟是后天不能飞行的(也就是说,他们失去了飞行的能力)。
Most ornithologists say that these birds are secondarily flightless(i.e., they lost the ability to fly).
飞机不能飞行超过几秒钟,而不必调整机翼。
The plane can't fly for more than a few seconds without having to adjust its wings.
当不是一个正式标志,猕猴桃,一只小当地不能飞行的鸟,代表新西兰.
While not an official symbol, the Kiwi, a small native flightless bird, represents New Zealand.
虽然我们不能飞行,但我们能够以时速50公里持续跑1小时以上。
Although we can't fly, we can sustain a running speed of over 50 kilometers or 30 miles per hour for more than an hour.
现在美国航空公司正在告诉乘客他们的一些服务和情绪支持动物-包括山羊,刺猬和生物-不能飞行。
Now American Airlines is telling passengers some of their service and emotional support animals- including goats,hedgehogs and tusked creatures- can't fly.
一般认为不能飞行的,以某种飞机的实际尺寸按一定比例制作的模型叫飞机模型。
Generally considered not to flyto the actual size of a model aircraft produced by a certain percentage called aircraft models.
一台发动机不能飞行--它是不对称的,你会滚动。
With one engine you cannot fly- it's asymmetric and you do rolls.
如果飞行员身体不适,是不能飞行的。
If a pilot is impaired in any way, he should not be flying.
新西兰当地巨型的、不能飞行的鸟。
It is New Zealand's local flightless flying birds.
Emu is a large flightless bird that can run as fast as 45km/h(28mph).
埃登斯提出的将“太长而不能开车,太短而不能飞行”的城市连接计划看起来也很合理。
Edens' idea to connect cities that are“too long to drive,too short to fly” also looks sensible.
(b)破坏使用中的航空器或对该航空器造成损坏,使其不能飞行或将会危及其飞行安全;或.
(b) Destroys an aircraft in service orcauses damage to such an aircraft which renders it incapable of flight or which is likely to endanger its safety in flight; or.
Because if Germany's most advanced fighters can't even fly, then how the U.S. drawback on its European military commitments without undermining the Western security alliance?
我认为它不能飞行,即使它可以打开翅膀。
I do not think they could fly even if they had wings.
现在,还有一些F-102保存在博物馆里,虽然他们都已经不能飞行了。
No F-102s remain in flyable condition today although many can be seen at museums.
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