horizontal level 基本例句 水平位置 Please put your armrestinto horizontal position for landing.降落时请将座位扶手放于水平位置。 We have already noted its relation to roll stiffness and to the tendency of airplanes to fly with wings level.我们已经注意到，它关系到滚转刚度和飞机保持两个机翼在水平位置飞行的趋势。