Pastern: seen from the side almost upright, firm; seen from the front in straight line with the forearm.
骹关节:侧看近乎笔直,坚固;自前方看与前臂成一条直线。
The muscles that keep the pelvis upright, like a bowl, are located front and back.
使骨盆像碗一样保持端正的肌肉位于骨盆的前侧和后侧。
The helicopter should be flying inverted and backward as it passes in front of the pilot, the helicopter should continue to roll back to upright after is passes in front of the pilot.
当直升机到达操控者的正前方时,机体刚好成为倒飞后退飞行,继续执行侧滚的动作,等到直升机通过操控者的正前方以后,机身便恢复为正飞后退飞行。
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