tough sledding的用法和样例：
例句
用作名词 (n.)
- It was an extremely tough negotiation with your firm.
和你们公司的协议真是费劲啊。 - A businessman was having a tough time lugging his lumpy, oversized travel bag onto the plane.
一个商人拖着他那鼓鼓囊囊的特大号旅行袋登上飞机，真够费劲的。
词汇搭配
- tough sledding 费劲(困难的工作)...
