例句與造句

1. :The smallest, often portable photovoltaic systems are called pico solar PV systems, or pico solar.
2. :The smallest, often portable photovoltaic systems are called pico solar PV systems, or pico solar.
3. Since the efficiency of many appliances have improved considerably, in particular due to the usage of LED lights and efficient rechargeable batteries, pico solar has become an affordable alternative, especially in the developing world.
4. It's difficult to find pico solar in a sentence. 用pico solar造句挺難的