實詞。
art. 一(個)；每一(個)；任一(個)
n. 英語字母表的第一個字母；學業成績得優者；表示“最好”的符號
例子
a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation
any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes
one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
(biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA
實詞。
art. 一(個)；每一(個)；任一(個)
n. 英語字母表的第一個字母；學業成績得優者；表示“最好”的符號
例子
a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation
any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes
one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
(biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA