查词网为您提供after extensive research是什么意思,after extensive research的用法,after extensive research的词性,after extensive research的词根,after extensive research短语搭配,after extensive research双语例句等服务，让您轻松背单词。

查词网为您提供extensive research是什么意思,extensive research的用法,extensive research的词性,extensive research的词根,extensive research短语搭配,extensive research双语例句等服务，让您轻松背单词。