nevertheless 这个词能否和BUT连用?语法上有问题么?为什么?比如：按照朗文字典：What you said was true but nvertheless unkind.

能和but连用,在这里它是adv.副词,修饰它所在的句子；but在这里是conj 连词,起连接的作用,与nevertheless没有关系,也没有冲突.
相关例句：
What you said was true.It was,nevertheless,a little unkind.-------参考朗文词典
The old system had its flaws,but nevertheless it was preferable to the new one.--------参考牛津高阶词典
I knew a lot about the subject already,but her talk was interesting nevertheless.--------剑桥高级词典
祝新年快乐,：）