1. She was an amateur singer until she turned 50, when she turned professional.2. My hobby is swimming.3. His vocation is a school teacher. His avocation is a jazz musician.
 avocation amateur hobby玩票性質意思是為興趣而做，並非為賺錢。例如有些人喜歡唱粵曲，參加一些表演，不收錢或只收少量車馬費。所以可以用 hobby 或 avocation 表示，兩者都有興趣的意思，例如:My hobby is swimming.His avocation is a jazz musician.vocation = 正職如果要指一個有實力但還沒有到職業水準的，就可用 amateur，例如:She was an amateur singer until she turned 50, when she turned professional.
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