You may use a first name if you are asked to (call me …).
如果你得到允许的话,你便可以直呼某人的名字。
Would you like to leave your telephone number?
你想要留下你的电话号码吗?
Libraries made education possible, and education in its turn added to libraries: the growth of knowledge followed a kind of compound interest law, which was greatly enhanced by the invention of printing.