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Concrete was invented by the Romans 2,000 years ago,
羅馬人早在2000年前就發明了混凝土
but the Hoover Dam is the first large concrete dam in history.
但胡佛水壩卻是歷史上第一座由混凝土建成的大壩
Today virtually all dams are made of concrete.
現如今，幾乎所有的水壩均由混凝土建成
It's malleable and it's strong.
凝土易成形又很堅固
It's the world's favorite building material for any structure.
是建筑中使用最廣泛的材料
Frank is up against the clock, and he has a big problem.
時間緊迫 弗蘭克需要解決一個重大問題
The curing concrete generates heat.
混凝土凝固過程中會釋放熱量
If the dam were constructed in a single, continuous pour,it would put out enough heat to bake half a million loaves of bread every day for three years.
若這些混凝土一次性持續傾倒，產生的熱量足以連續三年每天烘烤50萬片面包
But worse, the dam would take 125 years to harden.
更糟的是 這讓大壩要過125年才能完全硬化
Frank Crowe's got no time for that.
弗蘭克·克羅可等不起
Backs against the wall, we figured out who we were.
無路可退 我們終于真正認清自己
We worked our way out of that Depression.
拼盡全力 安然度過了大蕭條時期
The secret of cooling the concrete lies within the dam itself.
讓混凝土冷卻下來的法寶就藏于大壩之內
582 miles of 1-inch pipes carry ice-cold water from the very river the dam is taming.
直徑1英寸總長582英里的水管，自大壩所要制服的科羅拉多河引來冰冷的河水
No one had ever thought of this before,and those pipes are still in the Hoover Dam today.
那是一次創舉，這些水管如今依然留在胡佛大壩中
Frank "Hurry Up" Crowe lives up to his name.
弗蘭克·克羅 未辜負其快手之名
The Hoover Dam is completed on September 30,1935,
胡佛大壩于1935年9月30日竣工
two years ahead of schedule.
提前兩年完工
Frank receives a bonus worth over $4 million in today's money.
弗蘭克獲得了一筆相當于如今400多萬美元的巨額獎金
