桥梁被一部分一部分地拆毁。

The bridge was taken down piece by piece.

《牛津词典》

新型浇模机大小同冰箱相仿佛，可以一部分一部分地自我复制。

The machines would be about the size of a refrigerator, and would self-reproduce by making a copy of themselves, part by part.

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例如，您可能希望从底部向顶部、一部分一部分地将棱锥图图表设置成动画。

For instance, you might want to set a pyramid diagram to animate, section by section, from the bottom up.

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As an editor, I'm constantly taking all these inputs and deciding on that one or that intersection of a few that makes sense for what we're doing.

作为一个编辑，我不断地吸收这些输入程序,决定哪一点或是哪一部分,是值得去做的。

斯坦福公开课 - Twitter之父Jack.Dorsey演讲：好奇和灵感的力量课程节选

At any instant, your motion, if it follows any curve, locally can be approximated as being part of some circle.

在任何时候,如果做曲线运动,都可以近似地认为是圆周的一部分

耶鲁公开课 - 基础物理课程节选

Depending on what kind of chemistry you go in to, you might accidentally memorize parts of the table, which is fine, but what you really want to know how to do is know how to use the periodic table.

取决于你今后从事哪个方向的化学研究，你可能会不经意地记住周期表的某一部分，这就够了，但是要注意,你真正需要知道的是如何使用元素周期表。

麻省理工公开课 - 化学原理课程节选