To avoid the complexity of multiple-submit forms, the XML forms Generator requires that the user select a single operation for which a form will be generated.
为了避免多次提交表单的复杂性，XML Forms Generator要求用户选择一个操作来生成表单。
Given this potential, why is it that so far, not a single commercial wave-power generator is in operation?
既然潜力如此巨大，那么为何迄今为止无任何一台商用海浪能发电机投入使用。
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