n.叶( vane的名词复数 );风向标;瞄准板;反复无常的人;
例句:
Explain why the vanes rotate when they are illuminated.
试解释:叶片被照亮时为什么会旋转.
The ventilator in the kitchen is broken, the vanes do not turn freely.
厨房的排气扇坏了, 扇叶怎么都不转!
The aerofoils are held in place by upright vanes, or endplates.
剖面小翼被垂直叶片或终板固定在有效位置.