他的慢性咳嗽已经持续了三年。
He has been suffering from a ___chronic cough for three years.
他长期患有慢性背痛。
He suffers from ___chronic back pain.
这家酒店的条件长期以来一直很糟糕——连热水都没有。
The conditions at this hotel are ___chronically bad—there's not even hot water.