美式电插头有两个火线插脚，一个地线插脚。
其中电插脚的清洁工作尤为重要，广大消费者要重视。
The electrical pin cleaning work is particularly important, consumers should pay attention to.
其中电插脚的清洁工作尤为重要，广大消费者要重视。
The electrical pin cleaning work is particularly important, consumers should pay attention to.
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