block up阻碍

例句：The entrance to the city was blocked up.
      城门口被堵住了。

2.And just to follow up on that, there have been reports that you are considering a lawsuit.

follow up跟着; 追逐; 继续

例句：You start the work, and I'll follow up.
      你先开始工作, 我会接着做。

      The chairman followed up with another question.
      主席接着又提了一个问题。
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