例句：

　　Carbolic acid is usually used for cleaning.

　　石炭酸常用于清潔。

　　His stomach might rupture from all the acid.

　　他的胃可能會(huì )因為所有這些酸而穿孔。

　　It is treated with acid before being analysed.

　　對它先用酸處理再進(jìn)行分析。

　　Cars cause pollution, both smog and acid rain.

　　汽車(chē)引起污染，既有煙霧又有酸雨。

　　These shrubs must have an acid, lime-free soil.

　　這些灌木必須要有酸性、無(wú)石灰的土壤。