Dictionaries are implemented using a magic technique called hashing, which we'll look at a little bit later in the term, which allows us to retrieve keys in constant time.

散列法的内容,此方法可以让我们在线性,时间内检索到键,因此字典的大小并不重要了。

麻省理工公开课 - 计算机科学及编程导论课程节选

Merrill said residents on either side of the Bush home were allowed to go into their houses a short time to retrieve what they could.

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Each time, colleagues rush to retrieve the bits of paper before waves suck them into the sea.

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In addition, signed contracts are archived in the cloud, making it easy for users to retrieve documents from anywhere, at any time, via a Web browser.

ENGADGET: Adobe Mobile Reader 10.2 adds signature, form support