Now lets try another type of exercise — asking and answering questions.
现在让我们做另一种练习- - -问答练习。
Well as you will notice this Texture CD also includes a few extras such as shadow maps and dirt masks, so lets try putting these into use.
好吧，你可能会注意到这张材质光盘中也包括了一些附加的东西，比如：阴影贴图和污垢的遮罩，所以让我们试着将它们应用进去。
If we can be happy, why not choose to be? Lets try together to create a world filled up with smiling faces and sunshine.
如果我们可以快乐，为什么不选择成为快乐的人呢？让我们一起努力来创建一个充满微笑和阳光的世界吧。
振作起来！我们再试试！
Lets try to think of some other ideas.
我们试着想想其他办法吧。
我们再试试！
Lets try a comparison: Reduce the sun to the size of a golf ball, the earth would be the size of a grain of sand.
我们来打个比方。假如把太阳缩小到高尔夫球那么大，那么地球的大小就会象一粒沙子。
Lets try a comparison: Reduce the sun to the size of a golf ball, the earth would be the size of a grain of sand.
我们来打个比方。假如把太阳缩小到高尔夫球那么大，那么地球的大小就会象一粒沙子。
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