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周末，航空公司和研究机构均已进行试验飞行。
Over the weekend both airlines and research agencies made test flights.
youdao
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对接机构在航天、航空、航海等许多领域都有广泛的应用。
Docking mechanism has been widely used in space, air and sea.
youdao
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对接机构在航天、航空、航海等许多领域都有广泛的应用。
Docking mechanism has been widely used in space, air and sea.
youdao