confine
vt.限制;使不外出，禁闭 n.[ pl.]界限，范围
We confined our study to 10 cases.我们把研究限定在十个案例以内。
confirm
vt.证实，肯定;进一步确定，确认;批准
New evidence has confirmed the first witness’s story.新的证据证实了第一个证人的说法。
conflict
n.冲突，争论;战斗(争) vi.冲突，抵触
the threat of industrial conflict in the coalfields煤田上发生工业矛盾的危险
confidence
n.信任;信心，自信
The survey reveals a lack of confidence in the police.民意调查显示公众对警察缺乏信任。
confident
a.确信的，肯定的;有信心的，自信的
He is quietly confident that there will be no problems this time.他暗暗相信这次不会有问题了。
