求翻译：安全、节能、环保、经济，尤其是带辅助电加热功能的太阳能热水器，它以太阳能为主、电能为辅的能源利用方式，可全年全天候使用。是什么意思？

Safety, energy conservation, environmental protection, the economy, especially the solar water heater with auxiliary electric heating function, it mainly solar energy, supplemented by energy use patterns, can be used around the clock throughout the year.

Security, energy, environmental protection, economic, and in particular with auxiliary heating function of the solar water heaters, solar energy is energy-based, supplemented by way of energy use, and can be used year-round.

The security, the energy conservation, the environmental protection, the economy, in particular bring the assistance electric heating function solar-powered water heater, it take solar energy primarily, electrical energy as auxiliary energy use way, but whole year all-weather use.

Security, energy saving, environmental protection, economic, especially solar water heater with auxiliary electric heating function, it is dominated by solar energy, electric energy utilization of secondary energy, can be used around the clock all year round.

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