日期：
来源：雅诚德英语网
Python has emerged as a powerful programming language since its introduction in the early 1990s.
自从90年代初引入以来，Python已经成为一种强大的编程语言。
Python has emerged as a powerful programming language since its introduction in the early 1990s.
自从90年代初引入以来，Python已经成为一种强大的编程语言。