obstruction of naso-lacrimal duct

• 鼻泪管阻塞

obstruction of naso-lacrimal duct的用法和样例：

例句

1. The Ascaris adults may perforate a suture line or cause a bile or pancreatic duct obstruction.
   成虫可穿破缝线或引起胆管或胰腺管阻塞。