1.
Then perform 5/8 loop, helicopter should be inverted on a 45 degree down line.
执行5/8内浸斗，使直升机成为倒飞的姿态，机头向下45°。
2.
The pilot nosed the plane down toward the runway.
驾驶员把机头朝下，向着跑道飞行。
3.
She dived into the swimming-pool.
她头向下跳进游泳池里.
4.
N - off(=N - to lose)!
【航海】别让船头掉向下风！
5.
radial bearing lower drive sub
下部径向轴承传动接头
6.
Spreading the lower side of the front panel plate outward( arrow B), detach the plate from the body.
向外侧拉伸前面板框的底边（头B）把板从机体上卸下。
7.
When the stone came towards him, he ducked his head.
当石头向他砸来时, 他迅速低下头。
8.
a headfirst plunge down the stairs; a headlong dive into the pool.
头部向前跌下楼梯；头部向前跳进游泳池里。
9.
Up or down arrow for indicating stair direction. Direction can be specified.
用上箭头或下箭头指示楼梯的方向。可指定方向。
10.
A faucet with a nozzle that is bent downward;a bibb.
弯嘴龙头一种带有向下弯曲的喷嘴的龙头；龙头
11.
You can also use the Up Arrow and Down Arrow keys.
您也可以使用向上和向下箭头键。
12.
Car drivers, in particular, are forever obsessed with the urge to go on and on: they never want to stop .
尤其是汽车司机，他们的头脑永 远都被"向前，向前"的冲动占据着：他们从来都不要停下来。
13.
After the helicopter is pointing at the pilot, execute a360 degree turn, in the opposite direction. The helicopter will again be pointing directly at the pilot.
当机头朝向操控者后，向另一侧执行360°平圆，使机头再次朝向操控者。
14.
engine mud sill
钻机动力机下纵向底梁
15.
The stone rolled down the hill by gravity.
石头在重力作用下向山下滚去。
16.
The alternate lift and descent of the nose and tail of an airplane.
（飞机）摇晃飞机机头机尾交替下沉
17.
Plug the Motorola charger into the headset, with the charger's release tab facing down and the headset facing up.
将摩托罗拉充电器插入耳机中，耳机朝上，充电器插头上的开锁钮向下。
18.
Remove 'H' coupling bolts from A/C compressor side of coupling.
从A/C压缩机接头侧拆下 'h'接头螺栓。