jet·pack 
(jĕtpăk′)
(jĕtpăk′)n.
A backpack powered by jets, used especially to enable an astronaut to maneuver independently during a spacewalk.
| 单词 | jetpack |
| 释义 | jet·pack (jĕtpăk′)n. A backpack powered by jets, used especially to enable an astronaut to maneuver independently during a spacewalk. |
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