医生正在尝试疏通病人堵塞的血管。

The doctor is trying ___to unblock the patient's clogged blood vessel.

清除这些障碍后，项目终于可以继续推进了。

After ___unblocking these obstacles, the project can finally move forward.

重启服务成功解除了卡住的进程。

Restarting the service worked for ___unblocking the stuck process.