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.
向前进的英文：march on参考例句：Move along;move on向前进The ship held to a southwesterly course.船继续沿西南方向前进Shoulder to shoulder,singing and lifting the red banners,we marched on.他们肩并着肩，唱着歌，举着红旗向前进
向前的英文：forwardonward参考例句：The plough sliced through the earth.犁破土向前。Press on; continue向前挤;加紧努力Step forwards/backwards向前迈步[向后退步An important step forward向前迈进的重要一步Drive on for a kilomet
向内的英文：entadinboardIntroinwardinwardlyupwards参考例句：Inward dives向内跳水Make your palms facing inward.手心向内。A hairstyle, usually shoulder-length, with the ends of the hair curled under smo
向某人求爱的英文：pay court to sb参考例句：Chase(after)sbp; make sexual advances to sb in an unsubtle way露骨地向某人求爱pay是什么意思：n. 工资，薪金；报偿；惩罚v. 付钱给；偿还；给予（注意等）；致以（问候等）；报偿；付款；值得You have to pay storage.