A

发音

US /eɪ̯/
UK /eɪ̯/
AU /æɪ/
IN /eː/

词形变化

A's As As 复数 A's 复数

别名

·

释义与例句

n.
  1. 1.

    Ace. (including in card games)

  2. 2.

    Acre.

  3. 3.

    Adult; as used in film rating.

  4. 4.

    Ammeter.

  5. 5.

    Angstrom.

    物理
  6. 6.

    Answer.

  7. 7.

    An assist.

    体育
  8. 8.

    Asexual.

  9. 9.

    Arsehole.

    英国
  10. 10.

    Atom.

    工程 政治 军事
adj.
  1. 1.

    Atom; atomic.

    工程 政治 军事
char.
  1. 1.

    The first letter of the English alphabet, called a and written in the Latin script.

    Apple starts with A.

num.
  1. 1.

    The first numeral symbol of the English alphabet, called a and written in the Latin script.

    Item A is "foods", item B is "drinks".

sym.
  1. 1.

    A rank, normally the highest rank, on any of various scales that assign letters.

    We assign each item inspected a rating from A through G, depending on various factors.

    In the UK, the highest social grade is A – upper middle class.

    The only standard brassiere cup size smaller than the A cup is the AA cup.

  2. 2.

    The highest letter grade assigned (disregarding plusses and minuses).

    教育

    I was so happy to get an A on that test.

  3. 3.

    A tone three fifths above C in the cycle of fifths; the sixth tone of the C major scale; the first note of the minor scale of A minor; the reference tone that occurs at exactly 440 Hz; the printed or written note A; the scale with A as its keynote.

    音乐

    Orchestras traditionally tune to a concert A.

  4. 4.

    A blood type that has a specific antigen that aggravates the immune response in people with type B antigen in their blood. People with this blood type may receive blood from type A or type O but cannot receive blood from AB or B.

    医学

    My blood type is A negative.

  5. 5.

    Mass number.

    化学
  6. 6.

    A universal affirmative suggestion.

    数学 哲学
  7. 7.

    Abbreviation of adulterer or adulteress, used as a human brand.

    历史
  8. 8.

    Allele dominant.

  9. 9.

    Alternative spelling of A.M. and AM (“ante meridiem”).

    美国

词汇关系

名词

同义词 10

damp amp type A adenine ampere angstrom angstrom unit axerophthol deoxyadenylic acid vitamin A

上位词 6

letter base nucleotide blood group blood type purine

下位词 2

dehydroretinol retinol

部分词 4

ma milliampere picometer picometre

整体词 10

dna RNA abamp abampere deoxyribonucleic acid desoxyribonucleic acid Latin alphabet micromillimeter micromillimetre millimicron

相关短语

one-of-a-kind adj. 每种只有一个的 one and a half 一个半

词源

* (highest rank, grade, music): From the initial position of the letter A in the English alphabet. * (blood type): From A antigen

来源：wiktionary