| 单词 | retrorocket |
| 释义 | retrorocket retrorocket /ˌret.rəʊˈrɒk.ɪt/ aep /-rəˈrɑː.kɪt/ noun [C] ► F0 a rocket on a spacecraft or an aircraft that fires in the opposite direction to the direction in which the vehicle is travelling, in order to slow it downThesaurus+: ↑Space travelThesaurus+: ↑Parts of aeroplanes |
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