It is difficult of him to part with his extravagant habits.

要他戒除那些奢侈的习惯可真不容易。

We should acquire the art of being difficult, of smiling less, of saying 'no' more often and of leaving the room when we want to.

我们应该掌握“坏脾气”的艺术，少笑，多说“不”，在我们不想继续待下去的时候离开房间。

'I think your good sense will perceive, ' Mr. Gradgrind remonstrated in all humility, 'that whatever the merits of such a system may be, it would be difficult of general application to girls'.

“我想你的理智会明白，”葛雷格林先生非常谦逊地抗议道，“无论这种制度有什么优点，都很难普遍适用于女孩。”

He did as he was bidden, and she busied herself with the knife again, politely ignoring him so that he should not have to pretend to an indifference that would be difficult of achievement.

他照他说的做了，她又忙于刀子，礼貌地无视他，这样他就不必假装冷漠，那是很难做到的。