Silence can be the loudest form of protest.
Life can be pulled by goals just as surely as it can be pushed by drives.
制造链式反应机器的基本点当然是确保每次裂变产生一定数量的中子,其中一些中子将再次产生裂变。
人一生不学习,一天闲过,一事无成,这是人生三件可惜事。