这是太阳能的最大缺陷——当太阳光变弱或者不存在时，人们该怎么解决。

That is the biggest drawback to solar energy, the problem of what do you do in cases where the sun's light is weak or virtually non-present.

youdao

你可以问一些问题，比如“那该怎么解决呢？”或者“你觉得他们怎么想？”

You can do this by asking questions like, "Well, how could this be resolved?" or, "How do you think they feel about it?"

youdao