7. 选择材料的第一步就是选择它们的特性。的翻译：7. Select the first step is to choose with their inherent characteristics of the material. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

7 Select the first step is to choose their material properties.

7. Select the first step is to choose with their inherent characteristics of the material.

7. The choice material first step chooses their characteristic.

* Select materials 7. The first step is to choose their identity.

7. Select the first step is to choose with their inherent characteristics of the material.