| 单词 | helicopter |
| 释义 | helicopter n. & v. --n a type of aircraft without wings, obtaining lift and propulsion from horizontally revolving overhead blades or rotors, and capable of moving vertically and horizontally. --vtr. & intr. transport or fly by helicopter. Etymology: F h{eacute}licopt{egrave}re f. Gk helix (see HELIX) + pteron wing |
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