废水生物处理的对象:so...as和as...as分别是什么意思?有什么区别?请各举一个例句说明!
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as..as 用于肯定句
so..as用于否定句
He is as tall as Tim.
She is not so pretty as Lynn.
as..as 用于肯定句
so..as用于否定句
He is as tall as Tim.
She is not so pretty as Lynn.