I don't mind training hard, because you get better and better all the time.我不介意进行刻苦训练，因为这样的话你就一直在进步。Things are getting better and better.事情正变得越来越好。Day by day I am getting better and better.我在一天天地好转。Her work just keeps getting better and better.她的工作越干越好了。