There are formidable problems associated with practical utilization of solar energy.
有些难题和太阳能的实际应用有关。
There are formidable problems associated with the practical utilization of solar energy.
有一些令人生畏的难题与太阳能的实际应用联系在一起。
There are formidable problems associated with the practical utilization of solar energy.
有一些令人生畏的难题与太阳能的实际应用联系在一起。
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