baker's dozen

noun

1. 十三
   a group of thirteen (= one more than a dozen, which is twelve)

1. I was right-a baker's dozen is13.
   结果还是我对，面包师的一打确实是十三个。
2. He bought a baker's dozen of biscuits.
   他买了十三块饼干。
3. There are a baker's dozen recognized breeds and several'unofficial ones '.
   有面包十几公认的品种和几个'非官方的'。
4. So, here's a baker's dozen of the most common and most costly mistakes students make in picking a major ( and our best advice on how to avoid them)
   所以，这里学生在选择专业时所犯的最常见、代价最重的错误（我们还会拿出自己最好的建议来避免犯错）。

noun

1. the cardinal number that is the sum of twelve and one

   Synonym:    thirteen13XIIIlong dozen