美[e?] 1 . Liver and kidney are particularly rich in vitamin A .
肝臟和腎臟富含維生素A。
來自柯林斯例句
2 . Details are available from the Hon. Sec. A .R. Bushby.
詳情可咨詢名譽秘書A.R.布什比。
來自柯林斯例句
3 . I was assigned to Troop A of the 10th Cavalry.
我被派往第10騎兵隊的A連。
來自柯林斯例句
4 . Passes are graded from "A " down to "E".
及格分為A到E幾等。
來自柯林斯例句
5 . Use only clean, Grade A, perfect eggs.
只用表面干凈、無磕碰的A級雞蛋。
來自柯林斯例句
1.the blood group whose red cells carry the A antigen
2.a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation
3.any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes
4.one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
5.(biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA
6.the basic unit of electric current adopted under the Systeme International d'Unites;
a typical household circuit carries 15 to 50 amps
7.the 1st letter of the Roman alphabet
a，拉丁文、英文等語言中字母的第一個，在英文中也是一個不定冠詞。這個字母在很多領域均有應用，代表的含義各不相同，比如物理中表示電流單位，遺傳學中表示腺嘌呤，游戲中表示攻擊，網絡語言中表示詐騙等等。
