不要让别人的意见淹没了你内心的声音。
The past is not dead; it is not even past.
The best time to plant a tree was twenty years ago. The second best time is now.
追求数学知识是一段永无止境的旅程,充满了无尽的好奇和惊奇。
They had said that the city was a paradise, but I found it a hell.