求翻译：讨论了英语中150个最常用的习语用法，并提供练习说和写的有关习题，该类练习操练反复量大，涵盖面广而且编排精心恰当。是什么意思？

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<< The custom language >> discussed in English 150 most commonly used custom language usage, and provides the related exercise which the practice mediates writes, this kind of practice drills the counter-complex quantities to be big, the coverage broad moreover arranges carefully appropr

<< Idioms >> discusses the 150 most common idioms in the English language usage, and provides practice exercises in speaking and writing about, which exercises to practice again and a large amount, covering a wide arrangement carefully and appropriate.

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