2--So, what could it possibly mean to… Push the Envelope
 
1--There has got to be more to this expression.
 
2--Did you see what Adam is wearing today?
 
1--Yeah...well… he has always liked bright colors.
 
2--That guy really likes to push the envelope.
 
1--I could not get away with wearing that to work.
 
2--You know, I like that he is pushing the envelope.
 
1--This place needs some more color!
 
2--To "push the envelope" means to go beyond the limits of what is usual.
 
1--It can also mean to be very creative.
 
2--This expression comes from airplane pilots.
 
1--The word "envelope" in this idiom is actually a mathematical term.
 
2--It means a set of limits that may not be safe for a plane to go beyond.
 
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注解：
 
1.envelope信封
2.container容器
3.creative创造性的

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译文：

1--信封指平板纸容器，用来寄信。
2--那么，今天的短语是什么意思呢？挑战极限
1--今天的表达包含了很多内容。
2--你看到亚当今天穿的衣服了吗？
1--好吧，看到了，他总是喜欢穿亮色。
2--他真的喜欢挑战极限。
1--我不能容忍自己穿那样的衣服工作。
2--你知道吗，我喜欢他能够挑战极限。
1--这里需要一些新的色彩！
2--"挑战极限"指逾越界限，超出惯例。
1--它还指具有创造力。
2--这个表达源自飞行员。
1--这个习语中的"信封"一词，实际上是数学术语。
2--它指许多极限点，若飞机超过这些点飞行是不安全的。