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| NOUN |
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| /eɪ/ |
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| 1 | C/U the first letter of the English alphabet . A is a vowel . 英语字母表的第1个字母（为元音字母） |
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| 2 | A C/U the sixth note in the musical scale of C major C大调音阶中的第6个音符 |
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| 3 | A C/U a mark that a teacher gives to a student’ s work to show that it is excellent 甲，优（表示学业成绩第一等的符号） |
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| 4 | A U a common blood group A血型 |
| PHRASE |
| - | from A to B
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| from one place to another |
| 从一地到另一地；从甲地到乙地 |
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| What’ s the cheapest way of getting our products from A to B? 把我们的产品从甲地运到乙地最廉价的方式是什么？ |
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| See also | | - a-bomb | | - a-line | | - a-list | | - a-road | | - a to z | |
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