每棵树、每堵墙、每道篱笆在白得耀眼的田野的映衬下都很显眼。

Every tree, wall and fence stood out against dazzling white fields.

《柯林斯英汉双解大词典》

很久以前，大自然赋予每棵树不同的用途。

Long ago Mother Nature gave each tree a different purpose.

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“城市森林之友”（FUF）的树木专家每月对每棵新种植的街道树木进行一次“出诊”。

The FUF's tree experts make "house calls" to every newly-planted street tree once a month.

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Well, notice again, on each level of the tree, when I actually do the merging, so this remember, is when I wrote down just the numbers when I bottomed out with the list of size 1.

请注意，在这棵树中的每一层，我真正做合并时，就将每个大小为1的列表中的,数字写下来。

哈佛公开课 - 计算机科学课程节选