After she got into the car, he wondered why she stopped, looked up and smiled when a lightning came.
她上了车后,他不知道她为什么在闪电来的时候停下来,抬起头微笑。
So he wondered why that natural filtration process does not remove nitrates from the Mississippi River.
所以他想弄明白,为什么自然过滤过程未能去除密西西比河的硝酸盐。
He wondered why she needed to see him when all could be settled on the phone, but he agreed to a late-afternoon meeting that day.
不过他还是答应她就在那天傍晚见面。
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