to block up

• 堵塞墙上的洞

  fill in a hole in the wall

• 用木头堵塞山口

  use timber to block off a mountain pass

• 解决管道阀门堵塞问题

  unblock a valve

• 堵塞工作中的漏洞

  plug the gaps in one's work

• 公路被石头堵塞了。

  The road was blocked with rocks.

• 管子给沙子堵塞了。

  The pipe is blocked with sand.

• 因运输紧张有时发生交通堵塞现象。

  The pressure on the transport system can lead to congestion.