Now they're being made by dozens of companies, plus some utilities offer rebates.

现在，他们正在作出的几十个公司，再加上一些公用事业提供回扣。

youdao

Now they're being made by dozens of companies, plus some utilities offer rebates.

现在，他们正在作出的几十个公司，再加上一些公用事业提供回扣。

youdao