Next, place the cleaned and dried copper sheet on the burner and turn the burner to its highest setting.

接下来，把清理和干果铜表上燃烧，把燃烧器，其最高设置。

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Next, place the cleaned and dried copper sheet on the burner and turn the burner to its highest setting.

接下来，把清理和干果铜表上燃烧，把燃烧器，其最高设置。

youdao