hardest

• We worked hard but it was worth it .
  我们费了很大力量，但是值得。
• Do you prefer grass or hard courts ?
  你喜欢草地球场还是硬地球场？
• You can not lay down hard and fast rules .
  规则不能定得太严太死。
• The whole thing's been hard enough .
  整个事情已经叫人很不好受了。
• It is hard for white people to survive there .
  白人在那很难生存。
• It is hard to trace the order of discovery .
  很难查出谁是最先发现的人。
• The outcome of the war is hard to foretell ...
  战争胜负难以预卜。
• No hard and fast line can be drawn between the two .
  二者不能截然分开。
• The chair was hard and mean and creaky .
  椅子又硬又不舒服，还吱呀发响。
• He is hard working , but not very clever .
  他很努力，却不大聪明。