切勿认为任何事物是绝对确定的。
Do not feel absolutely certain of anything.
The construction industry should actively respond to climate change and promote green development.
负责任的退役与负责任的发展同样重要。
The only thing that matters is how you feel about yourself.
The very important thing you should have is patience.
Mathematics is not a deductive science—that's a cliché. When you try to prove a theorem, you don't just list the hypotheses and then start to reason. What you do is trial and error, experimentation, guesswork.