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1. What does a mean?
A, a [ei] n. 1. The first letter of the English alphabet. 2 The pronunciation represented by the letter A (or a) is/ei/,/0-3/,/α:/,/0-0:/,/0-5/,/i:/bake, hat, father, call, cobra, heritage 3. The written form of the letter A (or a) 4 Lead type (or printed, stamped, stamped, etc.) of letter A (or a) 5 The symbol for "first": Example sentence: row A in a cinema, seat 6 in the first row of the cinema Symbols representing "first class", "first-class", "first-class", "excellent": Example sentence: Grade A pork Grade A pork 7 [American English] [Education] A, excellent (a symbol indicating the best academic performance) Academic performance A (or excellent): Example sentence: an A student Outstanding student 8 In some schools, the symbol 9 represents the first semester of the academic year A lent money to B. A lent money to B. ten The first known quantity in mathematics is 11 The sixth note (or note) in the C major scale; A major, A major, A key, A string (the key or string that produces the A sound) is a scale with A as the main note (Medieval Roman numerals) 50; 500 13. The symbol for universal affirmative in logic is 14 【 Securities 】 Grade 1A (a level of city or corporate bonds, lower than Grade 2A and higher than Grade 3B). 1. A (or a) of 2 The first phrase is 1 From A to B [Oral] From one place to another 2 From A to Izzard=from A to Z 3. From A to Z [Oral] from beginning to end; absolutely; Thoroughly 4 Not knowing a word from B (or from A to B); I dont understand anything The A to Z of all knowledge related to a certain subject, etc; The beginning and end transformation of the matter: n. A "sa" s or Asas or Aesales a 1 [strong ei; weak 0-5] indefinite article (non-specific) one (one); We planted a tree. A gun is dangerous. A gun is a dangerous commodity. Every, every (one): Example sentence: once a day, once a day, twice a week [used before abstract nouns modified by attributive modifiers] Some kind: Example sentence: a happiness that she could not contain her inner joy [used before specialized nouns modified by attributive modifiers, indicating the temporary characteristics or certain attributes of this specialized noun]: Example sentence: It was a cold December. [Used before certain material nouns] One: Example sentence: a black tea A black tea [used before abstract nouns that are concretized, partially quantified, or express experience] One; One type; One piece; once; They have had a friendship of ten years. [Before a surname or a noun indicating a political party, group, ethnicity, etc.]: Example sentence: A Communist. [Before a proper noun indicating a name, place, date, holiday, etc.] [Equivalent to a certain]: Example sentence: A Miss Helen called you just now. A Miss Helen just called you. A Watergate is a scandal similar to the Watergate scandal; One set, one pair, one set: A cup and saucer A cup of beer with a tea tray [used before several plural nouns, representing the concept of "single"]: A fall in the Niagara River A waterfall over the Niagara River! Someone fell into the water! [Used before countable collective nouns and certain quantifiers]: Example sentence: a barracks [used as a typical example of a name or thing noun]: Example sentence: a Cicero in eloquence A person with the same (good) eloquence as Cicero [used in conjunction with adjectives that indicate quantity, time, age, etc., to indicate a certain attitude or emotion of the speaker]: Example sentence: Her grandfather is a heal