評論
打印
What I can do is just fill my rucksack full of sand and then bury it.
我能做的就是 用沙填滿我的背包 并把它埋起來
And that will be my deadweight that I can haul against.
用它作吊車的自重
Just pull off a length of rope.
再扯段繩子下來
Two bits of plastic are hosing just from the trash on the beach.
這有兩段塑料 它們是我從海灘上的垃圾中淘的軟管
Fit those together, and that will act just like a roller.
把它們套起來 等會就用它們作滾筒
And now you got two of those.Run a rope around that.
現在有兩個了 把穿繩子穿進去
And that's gonna help just reduce friction.
它能減小摩擦
Okay.That's the strong point.
行了 支撐點也有了
Now this runs out to the dead anchor.
把它連上錨點
Each time you loop the rope,The load you have to pull is reduced.
繩子每多繞一圈 所需拉力就減小一倍
It's called mechanical advantage.
這便是機械省力的原理
And just thread it through this roller.
讓它穿過這個滾筒
That will almost give me the pulling power of three men instead of just me.
有了它的幫助 我一個人的拉力 將擁有三人同拉的效果
Okay. Come on, then. We can do this.
好了 加油 我們能行
Come on. We can do this. We're so close now.
加油 我們能行 很近了
Come on. We can do this. Okay.
加油 我們能行 行了
It's at the limit,And then we're gonna need to set this again
繩長到極限了 還要再來一遍
Another 10, 15 yards right that way.Just do it in little stages.
要再往那邊移10或15碼 得一步一步來
