Life is like a song, with highs and lows.
人生就像一首歌，有高潮也有低谷。
What you actually pay for something is at least twice the listed price because of the energy， time， money needed to set it up， learn， maintain， repair， and dispose of at the end. Not all prices appear on labels. Actual costs are 2x listed prices.
城市记得人们遗忘的事。
The only way to learn a new programming language is by writing programs in it.