toughadj.强硬的；棘手的，难办的；艰苦的；严厉的；牢固的，强壮的；坚强的，坚韧的adv.以强硬的态度；强硬地，顽强地n.暴徒; 恶棍toughish稍坚韧的,稍强壮的,稍困难的,稍倔强的

1. It was an extremely tough negotiation with your firm.
   和你们公司的协议真是费劲啊。
2. 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。