Dictionaries range broadly in purpose, size, and price; and choosing one is a very personal decision. The best advice is to make note of the things you and your family look up in a dictionary over a few weeks' time, and then go to a comprehensive bookstore to make the choice. Here are a few things to look for in making your selection. Size Big, complete (unabridged) dictionaries are expensive and take a lot of room in your office or home. They are also difficult for children to use because they are bulky, and it takes longer to look something up because new readers' alphabetizing skills are incomplete. An unabridged dictionary on the coffee table might impress your friends; but unless you use a dictionary on a daily basis, it probably is not a good buy. Perhaps you should look at smaller "college" dictionaries. Pronunciation guide Many people use a dictionary to help them pronounce new words. (One caller to the hot line saw an "etagere" advertised for sale, knew what it was and wanted one, but didn't want to call the seller without knowing how to pronounce the word.) The pronunciation guide should be complete but not contain a lot of unfamiliar symbols that require continual cross-checking--especially with the vowels. The English vowel system is complex because we use one letter to spell many different sounds. For example, the letter A has three different sounds in the words at, age, and art. The job for the dictionary makers is to find three common symbols to represent the different pronunciations. Examples Sample sentences showing common uses of words are very helpful, both in clarifying the meaning and helping the reader remember the word. The words in the sentences should not be any more difficult than the target word, however, or the reader is sent off on a frustrating chase through the dictionary. In the words of technology, "A good dictionary should be user-friendly." Usage Notes Many dictionaries comment on the usage of words in different types of situations. Many of the old dictionaries contained only the standard accepted usages. "Ain't" was not to be found and teachers could correct their charges by saying, "Ain't isn't in the dictionary." Imagine the teachers' dismay when dictionaries started including such forms! The dictionaries do comment on the usage--non-standard, colloquial, regionalism are some of the terms used to let readers make their own decisions as to whether they want to use the term. One final comment--forms of speech change much more rapidly than written forms; and many spoken items never make it to the written language (slang, for example). For this reason, you will need to buy several dictionaries during your reading life. Find one that you like, and consider its new editions when it's time for a new one.
畅销全球的英文：sell well all over the worldsell是什么意思：v. 卖，出售；推销；使畅销；宣传，使接受，使人相信；背叛，出卖n. 推销术Television sells many products. 电视促进许多商品的销售。 This shop is licensed to sell tobacco. 这家商店被准许卖烟草。T
畅销品的英文：【经】 best seller参考例句：quick-selling product;Ready seller;quick seller畅销品a best seller畅销品;畅销书best是什么意思：adj. good和well的最高级adv. 最；最好地；最高标准地n. 最好的事物（人或状态）v. 打败to the best advantag
畅销货的英文：hot number参考例句：This made the car a great success and put in the category of the falcon and the Mustang这种车一下子就成了畅销货，可以同猎鹰和野马并驾齐驱。hot是什么意思：adj. 热的；辣的；很受欢迎的；非常棒的；性感的；棘手的Hot dog
畅销的英文：fast sellervery marketablesell fastmarketed widely参考例句：The attractive and durable household electrical appliances sell well.美观耐用的家电用品，畅销于市。The best-selling sweaters in the mo