Written for advanced learners and professionals working with English and Mandarin Chinese, this first edition celebrates a successful collaboration between the two well-known publishing houses of Collins and the Foreign Language Teaching and Research Press, together with an international team of linguists. It includes up-to-date coverage of everyday and technical vocabulary, with particular focus on specialist terminology in medicine and science. It offers around 150,000 usage examples based on Collins 4.5 billion word corpus, showing English as it is actually used in context. It contains biographical entries referring to people across all walks of life; hundreds of encyclopedic references with information about the most important events, customs and institutions in the United Kingdom and the United States; cultural notes cover all aspects of British and American life and culture; usage differences between British and American English, and notes that describe the most commonly-confused words in English. Phonetics are shown using the International Phonetic Alphabet (IPA) and irregular inflected forms of English words shown in full. Chinese speakers can access an app with English audio. A range of supplements include information on Differences between British and American English, English Prefixes and Suffixes, Weights & Measures, Chemical Elements, UK Traditional Counties & US States, Books of the Bible.