Translation

• one day

Examples

• 一天天热起来了。
  It is becoming warmer day by day.
• 他一天一天地好转。
  He is getting better day by day.
• 她一天一天地好转。
  She is getting better day by day.
• 情况一天比一天差。
  The situation is getting worse and worse day by day.
• 一天一苹果，医生远离我。
  An apple a day keeps the doctor away.