Idiom: a mile a minute

"Some people would just talk to her a mile a minute, using all sorts of idioms and slang without even knowing it,...."

a mile a minute: very rapidly(Information From Answers.com)

Example: She was talking a mile a minute about the accident.

to talk a mile a minute:滔滔不絕(Common Local English Expressions)

＊在摘錄句裡，請注意到slang沒有s，因為slang是不可數名詞，在『英文用法大字典』中，明確的寫道：

"slang"統指俚語，並不指一個一個的俚語;前面不可加"a"，也沒有plural式"slangs"。例如可以說"This word is slang."和"All these phrases are slang"，不可說"This word is a slang." 和"All these phrases are slangs."