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.
写好文章，需要长时间的练习。
To write articles beautifully would require a long time of practice.
这就意味着你需要大量的精力来维持长时间的练习。
That means that you're going to need a lot of stamina to go for long periods of time.
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