fifteenth

名词 fifteenth:

1. position 15 in a countable series of things

形容词 fifteenth:

1. coming next after the fourteenth and just before the sixteenth in position
   同义词：15th

1. The boat leaves Liverpool on the fifteenth, but before we set sail(for New York) I have to spend a few days in Scotland.
   船十五号离开利物浦，但是(开往纽约)之前，我得在苏格兰呆上几天。
2. He traces his family back to about the fifteenth century.
   他把他的家世追溯到十五世纪前後。
3. Most students in this class are fifteen.
   这个班的大多数孩子都十五岁。

fif.teenth

n.（名词）
The ordinal number matching the number 5 in a series.
第十五：在一系列中排在第十五的序数
One of 5 equal parts.
十五分之一

【引伸】
fifteenth.
adv.（副词）
adj.（形容词）