详细解释:n. 双翼飞机
英语解释：
名词 biplane:
old fashioned airplane; has two wings one above the other详细解释：
bi.plane
n.（名词）An airplane having two pairs of wings fixed at different levels, especially one above and one below the fuselage.双翼飞机：有两片机翼安在不同水平线的飞机，尤指一在机身上方，一在机身下方