If you feel that walking is already pretty strenuous for you then you should stay at this stage for some time until you feel that you can push yourself a little bit further.
如果你觉得走路都非常费劲，那你必须在这一阶段保持一段时间，直到感觉自己可以进行更强一点的训练。
It was very hard, I mean long hours anywhere from like eight to ten hours a day, and sometimes it got you know pretty stressful and 4 strenuous just doing lines over and over and over again.
这工作很不容易，我是说要用很长的时间，比如一天八或十个钟头，有时候光是重复唱歌词就弄得很有压力感、很紧张了。
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