虽然肯定要比喷气式飞机速度慢一些，但是混合型的飞艇基本上没有噪声，同时起飞和降落都不需要下面的基础设施。

Although certainly slower that hopping on a jet, the hybrid blimps are nearly silent and require very little infrastructure to take off and land.

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一个飞行着的喷气式飞机只有它飞过后我们才可听到噪声。

As a flying jet plane leaves its noise behind it, we do not hear it until it has gone.

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一个飞行着的喷气式飞机只有它飞过后我们才可听到噪声。

As a flying jet plane leaves its noise behind it, we do not hear it until it has gone.

youdao