1·We had to call in a plumber to unblock the drain.
我们只得叫个管子工来疏通下水道。
—— 《牛津词典》
2·The priority, in terms of stemming the panic, is to unblock clogged credit markets. In most cases that means using central banks as an alternative source of short-term cash.
要想根除恐慌，疏通阻塞的信贷市场是首要的问题，这意味着央行要成为短期资金的替代来源。
3·If the carotid stenosis is particularly bad, surgery may be used to unblock the artery.
如果颈动脉狭窄尤为严重，手术可用于疏通动脉。
4·If the wire is entangled in obstruction, can give it back to some unblock continue with normal speed.
假如钢索被堵塞物缠住，可以把它拉回一些，再持续用正常的速度进行疏通。
5·I just solved it by additional Google search. problem is to unblock properties after DLL-Downloads.
我只是解决了额外的谷歌搜索。问题是疏通dll下载后性能。