They can block air passages or sinus channels to cause a variety of grief . 它们能阻塞气道或鼻窦的通道，造成各种痛苦。
2.
It is lined by the same kind of lining as the nose and sinuses and is subject to any inflammation that can occur in those areas 咽鼓管内表面和鼻、鼻窦的内表面一样，而且也容易受到同样的感染。
