直升飞机可以直上直下地起落。
A helicopter is able to take off and land straight up and down.
鱼闭着嘴，尾巴直上直下地竖着，我们像。
With his mouth shut and his tail straight up and down we sail like brothers.
城顶最险处，坡度约为70度，几乎是直上直下。
City ZuiXian place, top slope is about 70 degrees, almost straight up and down.
飞机有一段时间直上直下，飞行员无法将它稳定下来。
The plane was sent into a steep climb and then a dive, before the pilots were able to stabilise it.
锯末的比重很轻，直上直下，锯末进入后由压轮旋转甩到四周，均匀压制颗粒。
The proportion of sawdust is very light, straight up and down, after entering the sawdust composed of a pressing wheel spin around, uniform particle suppression.
锯末的比重很轻，直上直下，锯末进入后由压轮旋转甩到四周，均匀压制颗粒。
The proportion of sawdust is very light, straight up and down, after entering the sawdust composed of a pressing wheel spin around, uniform particle suppression.
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