If the solar battery and glass are combined and used in buildings or street lamps, they can play the role of saving energy and decorating.

若此类太阳能电池与玻璃联合用在建筑或路灯上，可起到节能和装饰作用。

youdao

Each group of gas discharge lamps are combined to form an organic whole; the required power levels can be easily selected based on needs, so as to realize high-power lighting of gas discharge lamps.

将一组气体放电灯组合成一个有机整体，根据需要方便选择所需功率档次，实现了气体放电灯的大功率照明。

youdao

Meanwhile, these lamps combined will equal to carbon emissions of all the motor vehicles in the UK. This can be a bit depressing, but there is some good news.

FORBES: How to Light Africa Within a Decade