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In the second place, we cleaned their houses from top to bottom, getting rid of the dirt accumulated for years and giving a brand-new environment to them.

第二，我们彻底清扫了他们的房子，清除了多年积累的灰尘，给他们一个全新的环境。

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Tools support for the top-down approach has generally been more limited than the support for bottom-up, but that support is improving.

支持自顶向下方法的工具通常要比支持自底向上方法的工具有更多的限制，但这种情况正在逐渐改进。

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But for the next week or two when you're writing programs, at least for the first time, generally if you're trying Scratch to debug them like you might have been trying to troubleshoot Scratch, you're probably going to reason - through it by looking through the your code -- -- top to bottom, maybe engage a staff member for help -- but your friend will also be printf.

但是，在接下来的一两周内，当你们写程序的时候，或至少在第一次写的时候，通常如果你在调试程序,就像你们可能已经试着调试过,你们或许是通过查看你们的代码,来推断你们的程序-,从头到尾，可能还需要别人的帮忙-,但是你的朋友也将要打印输出。

哈佛公开课 - 计算机科学课程节选

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Yum Brands posted a top-line miss and a bottom-line beat for its third quarter, but investors focused on its performance in China, where operating profits surged 22% and same store sales gained 6%.

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