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They are designing a new jet-liner.
他们在设计一种新型的喷气客机。
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The runway is not long enough for a jet liner to sit down on safely.
这条跑道不够长，喷气客机不能安全降落。
youdao
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The runway is not long enough for a jet liner to sit down on safely.
这条跑道不够长，喷气客机不能安全降落。
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