利用坚固的三角架和快门绳来保持你相机的稳定。
Keep your camera motionless by using a sturdy tripod and a shutter release cord.
这就是发生在肖恩∙霍尔斯特德身上的事情，有一天他在佛罗里达赫尔伯特田野进行一次训练任务，从一架直升机上进行快速游绳时，他从40英尺高的地方掉到地面上。
That's what happened to Sean Halsted one day when he fell 40 feet to the ground while fast-roping from a helicopter during a training mission at Hurlburt Field, Fla.
断绳安全装置滑道加油时，油不得流入制动瓦和导轨架无缝钢管之间。
When adding oil to the rope-break safety instrument, the oil shouldn't flow to the brake and seamless steel pipe.
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