I felt blue at his words and warned myself that I should economize in my life because there are still a lot of people who could not even manage to have a full meal.

• 听到这些，我心里总是酸溜溜的，同时也在警醒自己：平时生活要多多节省，这世界上还有很多人想吃一顿饱饭都很艰难呢！