不要挑战极限。
Test pilots try to push the envelope.
试飞员尝试挑战极限。
That computer company's new laptops really push the envelope.
那家电脑公司的新型膝上型电脑真是空破极限。
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。
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。
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。
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。
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