biplane的复数形式怎么拼写？

biplane的音标：biplane的英式发音音标为：['baɪpleɪn]biplane的美式发音音标为：['baɪˌplen]...

He arrives in his biplane and crash lands it in a tree.他驾驶双翼飞机到达，在一棵树上紧急降落。Early on 14 November Ely Curtiss's pusher biplane was hoisted aboard.十一月十四日晨,伊利的柯蒂斯推进式双翼机被吊上船.Forever may fly by oneself biplane wing soarin...

n.双翼飞机，复翼飞机...