This is the 5902nd most frequent Chinese word.
士新
"士新" does not have a clear or common definition in Chinese; it may be a name or require context.
In this sentence, '士新' is used as a proper noun, possibly referring to a person's name.
士新在学校表现出了极大的热情和努力。
Shixin showed great enthusiasm and effort at school.
Here, '士新' again acts as a name in the context of a person being encouraged.
我们一直鼓励士新不断创新和进步。
We always encourage Shixin to keep innovating and improving.
Once more, '士新' is a proper noun used to denote someone's name and describe their qualities.