There are hundreds of similar readings and geography and arithmetic programs, but almost nothing on electricity or physics or architecture.
有成百上千的阅读、地理和算术方面的类似程序，但是在电学、物理或建筑方面几乎是空白。
There are hundreds of similar readings and geography and arithmetic programs, but almost nothing on electricity or physics or architecture.
有成百上千的阅读、地理和算术方面的类似程序，但是在电学、物理或建筑方面几乎是空白。
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