1、His amateurship in playing the piano was evident, but he still enjoyed performing for his friends.
他在弹钢琴方面的业余水平很明显，但他仍然喜欢为朋友们表演。
2、Even though he lacked formal training, his natural talent allowed him to rise to the top of amateurship in the sport.
尽管他没有接受过正式培训，但他的天赋使他在该运动的业余水平中脱颖而出。