求翻译：近年来，人类面临的是能源危机和环境污染的双重严峻挑战。在此背景下，电动汽车的研究和开发成为了当前汽车技术领域的一个重要方向，其中，电动自行车因其环保、便捷以及轻巧等优异特性成为了研究热点。是什么意思？

In recent years, mankind is facing the serious challenge of the dual energy crisis and environmental pollution. In this context, the research and development of electric vehicles has become an important direction of the current automotive technology, which, the electric bike has become a hotspot bec

In recent years, the human face is the energy crisis and environmental pollution of the double challenge. In this context, the electric motor of the research and development into the current automotive technology field one of the major directions in which, because of their electric bicycles as well

In recent years, the humanity faced is the energy crisis and the environmental pollution dual stern challenges.在此背景下，电动汽车的研究和开发成为了当前汽车技术领域的一个重要方向，其中，电动自行车因其环保、便捷以及轻巧等优异特性成为了研究热点。

In recent years, humanity is facing dual challenges of energy crisis and environmental pollution. In this context, electric vehicle research and development has become an important direction of the current areas of automotive technology, including electric bike because of its excellent characteristi

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