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The metal wand gives the electricity a controlled pathway from the wire to the helicopter.
金屬棒給電能提供了一條從電線到直升機的可控通路。
Once the pathway is established, the lineman replaces the electrical connection held by the wand with metal clamps.
一旦通路建立起來，線路員就用金屬夾子代替了棒上的電連。
The clamps allow the lineman to free his hands so that he can work.
夾子使線路員解放雙手以便工作。
I was working in the middle of the Everglades and I knocked the bond off, unbeknown to me, and when I went to get close to the wire, the arc went straight to my mouth.
我當時在大沼澤地里干活，我不知情地把連接弄掉了，當我靠近鐵絲網時，電弧直沖我的嘴。
So, I absorbed, roughly, about five hundred thousand volts to my mouth and my nose, blew all the fillings out of my mouth quarterized my nose, knocked me out of my seat belt up underneath the platform of the belly of the ship on the platform,
我大約吸收了五十萬伏特到我的嘴和鼻子上，把嘴里所有的和鼻子里四分之一的填充物都吹出來，把我從安全帶上撞到了平臺的船腹平臺上，
and I was unconscious, it seemed like for a pretty long time, but it was just a few seconds.
我失去了知覺，感覺似乎有很長一段時間，但只有幾秒鐘。
The amount of voltage may be the first fact recited when explaining the dangers of electricity, but the high voltage isn't what kills a person.
在解釋電的危險時，電壓的大小可能是要說明的第一個事實，但是高壓并不是導致人死亡的原因。
It's the amps.
是電流。
The electricity in the lines can flow at five hundred thousand volts but isn't necessarily deadly if the amps are low, real low.
線路中的電流可以達到五十萬伏，但如果電流很低，就不一定是致命的。
It only takes one amp to stop the heart.
心臟停止跳動只需一安培。
Think of the electricity flowing through wires as the flow water.
把通過電線的電流想象成水流。
In a squirt gun water is under pressure and moves fast, but to put out a fire, it's not the best choice.
在水槍里，水是有壓力的，移動很快，但要滅火的話，這就不是最好的選擇了。
You need a fire hose that can move a whole lot of water.
你需要一個能移動大量水的消防水管。
The water pressure is equivalent to voltage in electricity.
水壓相當于電中的電壓。
The amount of water is like electrical current and is measured in amps.
水量就像電流一樣，它以安培為單位測量。
Electrical measurements are based on numbers of electrons.
電氣測量以電子數為基礎的。
A light bulb which uses one amp of current has sixteen quintillion electrons moving past a single point in the wire each second.
一個使用一安培電流的燈泡每秒有16個百萬的三次方電子通過導線上的一個點。
And, they all have to come from somewhere.
而且，它們都必須來自某個地方。
Good evening, ladies and gentlemen, my name is Bruce. I'm going to be your guide for the tour this evening.
女士們先生們晚上好，我是布魯斯，今晚我要做你們的向導。
Behind me is Hoover Dam.
我身后是胡佛水壩。
Seven hundred and twenty-six feet tall and six hundred and sixty feet thick at the base, Hoover Dam contains enough concrete to pave a two lane road from San Francisco, California to Miami, Florida.
胡佛大壩高726英尺，底部厚660英尺，包含足夠的混凝土鋪就從加利福尼亞州舊金山到佛羅里達州邁阿密的雙車道公路。
Ladies and gentlemen, while you're on tour this evening, there are a few rules which you are going to have to follow.
女士們先生們，今晚你們在游覽時，有幾條規則你們必須遵守。
If you hear bells, whistles, horns, sirens, or buzzes, look at me.
如果你聽到鈴聲、口哨聲、喇叭聲、警笛聲或嗡嗡聲，就看著我。
If I'm still standing here, it is not an emergency.
如果我還站在這里，那就不是緊急情況。
If it is an emergency, follow the instructions which I give you carefully.
如果是緊急情況的話，請按照我給你們的指示小心行動。
Don't trample me trying to escape, I have the keys.
別踩著我想逃跑，我有鑰匙的。
