我们首先参观了怎样的东西工程，解释说，在成立之初干洗，溶剂使用的往往是煤油或汽油。

We first visited How Stuff Works, which explained that in the early days of dry cleaning, the solvent used was often kerosene or gasoline.

youdao

我们首先参观了怎样的东西工程，解释说，在成立之初干洗，溶剂使用的往往是煤油或汽油。

We first visited How Stuff Works, which explained that in the early days of dry cleaning, the solvent used was often kerosene or gasoline.

youdao