问题描述：
innovation什么意思
Statistical technigues are well developed in the US,but they feign ignorance of how these guys have gained their wealth.
1.这里为什么多了一个of?
2.of后面怎么有加从句呀?
Statistical technigues are well developed in the US,but they feign ignorance of how these guys have gained their wealth.
1.这里为什么多了一个of?
2.of后面怎么有加从句呀?
问题解答：
我来补答展开全文阅读