CNN news 2010-06-02 加文本

1.Another thing we do know: This is now the worst spill in American history. It could already be twice as big as the Exxon Valdez spill in 1989.

twice as big as表达倍数。

2.In the meantime, President Obama wants to limit new oil drilling and exploration, at least for a while.

in the meantime在…期间,同时

例句：In the meantime a ceasefire will be declared.
      与此同时，将宣布停火。

3.You can keep up with all the details on this throughout the weekend.

keep up with跟上, 不落人之后

例句：You're walking too fast. I can't keep up with you.
      你走得太快了, 我跟不上。

      We have to work hard to keep up with these excellent students.
      为了跟上那些优秀学生, 我们得努力学习了。