whiny

/ˈwaɪni/ 50
high-pitched and plaintive 哀鸣的; 爱发牢骚的

adjective [原级]烦躁的;爱抱怨的;常发牢骚的

It would be less whiny and more appreciative.
这将学会少发牢骚,并更懂得珍惜。

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