CNN news 2010-11-24 加文本

1.We begin with airport security lines. Now battle lines for travelers who say they don't want to sacrifice privacy for the sake of safety.

for the sake of为了…,为了…起见,出于…考虑

例句：We made concessions for the sake of peace.
      为了和平我们做出了让步。

2.But would you submit to one of these?

submit to顺从〔屈从, 服从〕…

例句：The minority should submit to the majority.
      少数应服从多数。

      Never submit to a threat.
      永远不要屈服于威胁。

3.Very few people have opted out.

opt out决定不参加,撤出,退出

例句：You cannot opt out of society.
      你不能脱离社会。

      Britain and Ireland say they will opt out.
      英国和爱尔兰称其将不会采取这一措施。