To be or not to be. That's not really a question.
生存还是毁灭。这其实不是一个问题。
当你写作时，你试图发现一些你不知道的东西。
The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.
The only way to learn mathematics is to do mathematics.
Safety production is the lifeline of mining enterprises and must be consistently emphasized.