by day

• Day by day she learnt more about her job .
  她日益了解自己的工作了。
• The fugitives traveled by night and rested by day .
  逃亡者夜行而昼伏。
• She sleeps by day and works by night .
  她白天睡觉，夜间工作。
• The market is becoming brisker day by day .
  市场日趋繁荣。
• ( his ) income is increasing day by day .
  收入日见增加。
• Transportation and communications are becoming easier day by day .
  交通日臻便利。
• We travelled by day and stayed at hotels every night .
  我们白天旅行，每晚住旅馆。
• I should set down what happened regularly day by day .
  我应按部就班地一天天接着写下去。
• I should set down what happened regularly day by day .
  我应按步就班地记下一天天发生的事。
• They followed day by day the discussions of the committee .
  他们天天注意执行委员会的讨论。