她惶恐地望着桌子上堆积如山的信函。

She looked in horror at the mounting pile of letters on her desk.

《牛津词典》

当空气接近海岸时，陆地会减缓它的速度并使其在此堆积。

When the air gets closer to the shore, it's slowed down by the land and starts to pile up.

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在河流下游，由于流速变缓，泥沙(等沉淀物)自然而然地堆积在河床中，曾经造成黄河经常改道。

In the lower reaches, where the current slows, the natural accumulation of sediment in the riverbed has caused the river to change course often in the past.

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You can very quickly drive yourself nuts by sitting down, thinking, oh, I can write this program, no sweat, and then you write it and then there's a tiny little mistake here, but then there's a tiny little mistake here and here, and all of these stupid little things cascade until you try running your program, and the thing just doesn't work.

如果你只是仅仅干坐着，不费吹灰之力，凭空幻想着我可以把这个项目搞定，你会想地发疯的，也许你会写出一点东西出来，可能会有一点点错误,紧接着这或那又出现一点小错误，这些小错误一点一点地堆积了起来,直到你开始运行你整个项目，你会发现这堆东西根本就不工作。

哈佛公开课 - 计算机科学课程节选