The source of the starting material need not be identified, but may be requested.
起始原料的来源通常无需说明，但有时会要。
I want to look at the energy starting from real material.
我们从身边真实的材料说起这些能量。
If you want more reference material now, Wikipedia is always a good starting point.
如果你想更多的参考材料，维基始终是个好帮手。
The downloadable material may also serve as a starting point for prototyping.
可下载的示例还可以作为开发原型的起点。
The downloadable material may also serve as a starting point for prototyping.
可下载的示例还可以作为开发原型的起点。
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