| 单词 | parachute signal |
| 释义 | > as lemmasparachute signal parachute signal n. ΚΠ 1937 Discovery June 187/2 The manufacture of marine signals,..parachute signals,..railway flares. 1982 Oil & Gas Jrnl. (Nexis) 15 Nov. 139 Included are signal pistols, hand launchers, hand flares, and parachute signals. < as lemmas |
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