standard of choosing materials 选材基准
Choosing the Right Reading Materials 选择合适的阅读材料
choosing teaching materials 教材选用
Choosing your raw materials 挑选可用的原材料
Choosing Suitable Reading Materials 选择适当阅读教材
Therefore, when choosing materials, must pay attention to material viscosity cannot too big.
因此，在选择物料的时候，一定要注意物料的粘度不能太大。
Most of them are adept at monitoring their performance outcomes, but are not very skillful at using learning strategies and choosing materials;
多数学生在控制学习结果方面表现出很高的自主性，但在运用学习策略和选择学习内容方面自主性较差；
Designers spent more than one year choosing and testing ideal materials, and finally picked a new kind of material that can resist the very difficult conditions on the Moon.
设计师们花了一年多的时间选择和测试理想的材料，最终挑选出一种能够抵御月球上异常恶劣条件的新型材料。
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