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figure out计算出,解决,断定,领会到
例句：I just can't figure him out.
我简直摸不透他。
I can't figure out what he was hinting at.
我想不出他在暗示什么。
2.So congress's investigation is looking into whether army officials paid enough attention to these reports.
pay attention to注意，关心
例句：No attention was paid to his advice.
他的建议没有引起注意。
3.However, it is prudent to determine immediately, whether there are internal weaknesses or procedural shortcomings in the department that could make us vulnerable in the future.
it在这里是形式主语，真正的主语是后面的动词不定式。