helicopteron
词形变化
helicoptera
helicopterons
复数
helicopterons
helicoptera
复数
释义与例句
n.
-
1.
A flying machine having an aerial screw propeller.
历史
词源
From Ancient Greek ἕλῐξ (hélĭx, “spiral”) + πτερόν (pterón, “wing”). Doublet of helicopter.
来源:wiktionary