verb · to remove obstructions from a channel, pipe, or flow to allow movement

工人们正在疏通堵塞的河道。

verb · to explain or clarify the meaning of a text or passage

这位学者对古典文献中的晦涩词句进行了疏通。

verb · to facilitate a process, resolve a conflict, or lobby through social or professional connections

经过多方疏通，这个项目终于获批了。