这是一个着实重要的区别，同时我很高兴它几乎没什么速度损失的开销就做到了。
This is a really important distinction, and I'm happy that it was able to be done with virtually no speed-hit overhead.
在他们诊断这个问题时候，一个飞行员选择了向上陡峭攀升而不是水平飞行，而这导致了速度损失。
Instead of flying level while they diagnosed the problem, one of the pilots climbed steeply, which caused a loss of speed.
Spark是我使用过的第一个Python程序，而我在使用中发现，解释语言的速度损失是其主要问题。
Spark is the first Python program I've used where I really found the speed penalty of an interpreted language to be an major issue.
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