He is going to buy some building materials.

他打算去买一些建筑材料。

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This paper will give a new way for controlling the quality of some building materials.

本文为一般建筑材料的质量控制提供了新的途径。

youdao

This paper will give a new way for controlling the quality of some building materials.

本文为一般建筑材料的质量控制提供了新的途径。

youdao