CNN news 2010-05-23 加文本

clog up堵塞,阻塞

2.One strategy is using dispersants, chemicals that help break up the oil.

break up(使)破碎, 分解
 
例句：The specs fell on the cement floor and broke up.
      眼镜掉在水泥地上破掉了。

      When does the ice break up on the river?
      河里的冰什么时候融化?

3.He says he is working to clean up the Minerals Management Service and he is keeping an eye on the different strategies to clean up this oil spill.

keep an eye on照看, 照管; 留心; 注意

例句：Basking on the balcony, Granny can still keep an eye on the children.
      老奶奶一面在阳台上晒太阳, 一面还能照看孩子们。