问题描述:
谁给分析一下这句英文倒装句的结构
because at no previous time has American security been as seriously threatened from without as it is today.
来自 Roosevelt 1941年的国会演讲
because at no previous time has American security been as seriously threatened from without as it is today.
来自 Roosevelt 1941年的国会演讲
问题解答:
我来补答展开全文阅读