1.America has moved on and, if you look closely at this study, I think you'll find that America's millitary is, by and large, ready to move on as well.

by and large总的来说, 大体而言

例句：By and large, women can bear pain better than men.
      一般来说, 女人比男人更能忍受痛苦。

2.What I want to know ,and what it is the Congress's duty to determine,is not can our armed forces implement a repeal of this law, but whether the law should be repealed.

What I want to know ,and what it is the Congress's duty to determine是what引导的主语从句。is后面是表语从句。
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