Now consider being given a socket wrench.
现在设想一下使用一个套筒扳手。
The key to success with a socket wrench is pattern matching: The socket must match the nut.
成功使用套筒扳手的关键在于模式匹配:套筒扳手必须与螺母相匹配。
He may have been disappointed in himself, even shaken, but outwardly he was as smooth and focused as a socket wrench.
也许他对自己有些失望,甚至有些动摇,但至少那聚精会神的神情看上去一切都还顺利。
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