tough sledding的用法和樣例：
例句
用作名詞 (n.)
- It was an extremely tough negotiation with your firm.
和你們公司的協議真是費勁啊。 - A businessman was having a tough time lugging his lumpy, oversized travel bag onto the plane.
一個商人拖著他那鼓鼓囊囊的特大號旅行袋登上飛機，真夠費勁的。
辭彙搭配
- tough sledding 費勁(困難的工作)...
