merriam-webster's essential learner's english dictionary

　　More than 54,000 words and phrases
　　Coverage of both U.S. and British English and their differences
　　More than 15,000 idioms, collocations, and commonly used phrases from American and British English
　　Clarifies definitions with over 74,000 example sentences and phrases
　　Usage guidance through extensive labeling (old fashioned, technical, informal, humorous, etc.); glosses (restatements to explain example phrases); count and non-count labeling; usage notes; and usage paragraphs

作者簡介

　　Merriam-Webster Inc. acquired the rights to revise and publish Noah Webster's dictionaries in 1843. Since then, Merriam-Webster has maintained an ongoing commitment to innovation, scholarship, and love of language.

　　Today, the company continues as the leader in language reference, publishing a diverse array of print and electronic products, including the best-selling Merriam-Webster's Collegiate Dictionary, Eleventh Edition. The company also publishes a full line of student references, bilingual dictionaries, and titles for English Language Learning.