The delayed shipments have become a real thorn in the logistics manager's side this quarter.

延誤的出貨這一季已成為物流經理的心頭大患。

Late expense reports remain a constant thorn for the finance team every month.

遲交的費用報告每個月都讓財務團隊頭痛不已。

That one demanding client has been a thorn in our customer service department's side for years.

那位難搞的客戶多年來一直是我們客服部門的眼中釘。