n.
十三
1 There're a baker's dozen of eggs.
有十三个鸡蛋.
2 He bought a baker's dozen of biscuits.
他买了13块饼干.
3 Although we had ordered only twelve, the shopkeeper gave us a baker's dozen.
我们只订购十二个, 但店老板却给了我们十三个.
1 十三
thirteen