Each codon either codes for an amino acid or tells the cell to stop making a protein chain.

每一个密码子或者编码一种氨基酸，或者告诉这些细胞停止生产这个蛋白质链。

youdao

Having more than one codon specify the same amino acid. used of a genetic code.

有不止一个密码子来指定同样的氨基酸。用于一种遗传基因。

youdao

Each codon is a specific sequence of three nucleotides (three nucleotide pairs in double-stranded DNA), and each codon codes for a single amino acid unit in a protein.

每个密码子是特异的三核苷酸序列（双链DNA状况下为三个三核苷酸对），每个密码子编码蛋白质的一个氨基酸单位。

youdao

That creates a problem in the genetic code in that there's 64 possible sequences but there's only 20 some amino acids, so each amino acid can be specified by more than one codon.

这里有个问题,遗传密码有六十四种可能的序列,而只有二十种氨基酸,因此每种氨基酸都有,不止一种密码子与之对应

耶鲁公开课 - 生物医学工程探索课程节选

Of the 64 possible codons, 61 correspond to particular amino acids though several amino acids have more than one codon, since natural proteins consist of only 20 sorts of amino acid.

ECONOMIST: Chemists are trying to synthesise new varieties of life

The result was a version of Ras that sported the new amino acid at the appropriate position, proving that the invented codon, artificial base and all, had been recognised and used.

ECONOMIST: Chemists are trying to synthesise new varieties of life