The line is fuzzy. 电话线路不清楚。

fuzzy是“模糊不清”的意思。它的原意是“有绒毛的”，来源于名词fuzz“细毛，绒毛”。line是“线”的意思，这里指电话线。The line is fuzzy是指“电话线路有干扰，电话线路不清楚”。

【英语情景剧】

Shirley: Sir, maybe there is something wrong with the phone in our company.
雪莉：老板，我们公司的电话可能坏了。

Boss: Really? It was fixed last Friday. What's the matter?
板：真的吗？上周五刚修的。怎么回事？

Shirley: The line is fuzzy.
雪莉：电话线路不清楚。