Aside from raw materials, it is also unclear whether the us still has the expertise for the complicated process of turning minerals into usable clean tech components.
除了原料，目前还不清楚美国是否拥有将矿石开采变清洁专门技术。
Aside from raw materials, it is also unclear whether the us still has the expertise for the complicated process of turning minerals into usable clean tech components.
除了原料，目前还不清楚美国是否拥有将矿石开采变清洁专门技术。
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