Of course, a "Hello World" example is always in order when learning a new language.
当然，在学习新语言时总是应该先研究一下“Hello World ”示例。
The traditional programming example is always the Hello World example.
传统的编程示例通常都是Hello World示例。
The first step is always just to get "hello, world!" working.
第一步总是实现“hello,world ！”
The first step is always just to get "hello, world!" working.
第一步总是实现“hello,world ！”
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