philatelist的复数形式怎么拼写

He is a philatelist;他是一位集邮家。I am a committee member of the Philatelist Association of our university.我是我们大学里集邮家协会的成员....

philatelist的音标：philatelist的英式发音音标为：[fɪ'lætəlɪst]philatelist的美式发音音标为：[fə'lætlɪst]...

n.集邮家...