语文学对你不会有很大用途。
社会网对社会行为与问题的研究有很大用途。
The social network is very useful for researches in social conduct and problems.
基于上述原因，电子在研究微小晶体、表面和材料的微结构上有很大用途。
This makes electron diffraction very useful for studying 'small' crystals, surfaces or material's microstructure.
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