Test pilots try to push the envelope.

试飞员尝试挑战极限。

youdao

I push the envelope to do something no one has ever done before.

我想挑战极限做一些从来没有人做过的事情。

youdao

Then simply push on the load to move it through the full work envelope.

然后只需推动负载完成整个工作。

youdao

So, what could it possibly mean to… "push the envelope". There has got to be more to this expression.

那么，”推信封”会是什么意思呢?这个表达有多种解释。

youdao

So, what could it possibly mean to… "push the envelope". There has got to be more to this expression.

那么，”推信封”会是什么意思呢?这个表达有多种解释。

youdao