其时我大约只有十四岁,年幼疏忽,对于卡尔·华尔德先生那天告诉我的一个真理,很随便地未加注意,但后来回想起来真是至理名言,事后我就得到了不可限量的益处。华尔德是我的钢琴教师。有一天,他突然问我:你每一天要练多少时间钢琴?我说大约三四个小时。“你每天练习的时间都很长 At the time when I was only about fourteen years old, I was young and neglected. I was not careless about the truth that Mr. Carl Walder told me on that day. But when I came back to think of it, it was a famous saying. Afterwards, I received a limitless amount of benefits. . Walder is my piano teacher. One day, he suddenly asked me: How much time do you have to practice piano each day? I say about three or four hours. "You practice for a long time every day