我们需要长时间的练习来学习如何使用剪刀和如何画画。
We need a long time practice to learn how to use the scissors and how to paint.
您每一次拍照需要多久的时间？在您自己的身上画画需要多久？另外，在创造一个作品的时候，您大概需要多少外介的帮助？
How many hours you need in order to perfect the photographic shot, and the painting of your body. How much help do you need?
公众演讲是一种可以后天习得的技巧，就像弹钢琴或画画那样，可以通过训练学得。当然，这需要一定时间，也需要不断的练习以及行家的指导。
Public speaking is a learned skill, developed much like other skills, such as playing the piano or painting: over time, with practice and some guidance.
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