acid rain 酸雨 acid test 酸性测试 acid jazz 迷幻爵士乐
An acid solution is concentrated when it has very much acid in it.
当酸溶液里含有很多酸时,它就被浓缩了。
She uttered the phrase with acid sarcasm.
她以辛辣的讽刺口吻说这个词。
