She didn't have the bread now, and her face looked like it had been streaked with coal-dust.

她现在没有面包了， 她的脸上看起来像是沾满了煤灰。

Her father liked the metaphysical streak which had unconsciously got into it, so that was allowed to remain though she had her doubts about it.

父亲喜爱书中无意中夹杂进去的玄学意味，这部分便被保留了下来，尽管她自己对此不无怀疑。

Well, it's because when your eyes go on this ballistic jump if we were actually seeing that it would look like the world is streaking around all the time.

这是因为当你的眼睛在进行跳跃时，如果我们真的看到它，它看起来像是世界一直在飞驰。