在夏季测量完树木后，研究人员发现，大叶槭树产生的稳定电压高达几百毫伏。
After spending the summer surveying trees, the researchers discovered that big leaf maple trees generated a steady voltage of up to a few hundred millivolts.
在夏季测量完树木后，研究人员发现，大叶槭树产生的稳定电压高达几百毫伏。
After spending the summer surveying trees, the researchers discovered that big leaf maple trees generated a steady voltage of up to a few hundred millivolts.
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