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1. We need to open the mold for the new product before we can start producing it.
我们需要在开始生产新产品之前打开模具。
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2. The manufacturer needs to open the mold to release the finished product.
制造商需要打开模具来释放成品。
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3. During the manufacturing process, the mold must be opened to allow the raw material to flow into the cavity.
在制造过程中，模具必须打开以便原材料流入腔体。