The ribbons block passageways between molecules that normally exist in plastic.
这些薄条阻断了塑料分子之间通常存在的通道。
Card: Block patterns are made from heavy-duty card or plastic, as these are more durable.
卡纸：原型样板是由厚的卡纸或塑料卡做成的，因为它们经久耐用。
Card: Block patterns are made from heavy-duty card or plastic, as these are more durable.
卡纸：原型样板是由厚的卡纸或塑料卡做成的，因为它们经久耐用。
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