因为飞行前检查可以让你发现一些机务没有检查出的问题。

Of course, it's important. Because preflight walk around inspection can help me with discovering some problems which the maintainers haven't discovered.

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飞行前，与此控制，做了一系列检查。

Before flying with this control, do a range check.

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为了找出答案，研究人员检查了宇航员在飞行前后的脑部核磁共振影像。

To find out, researchers examined MRI's of astronauts' brains taken before and after flight.

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为了找出答案，研究人员检查了宇航员在飞行前后的脑部核磁共振影像。

To find out, researchers examined MRI's of astronauts' brains taken before and after flight.

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