unrealistic
US /ˌʌn.riː.əˈlɪs.tɪk/
UK /ˌʌn.riː.əˈlɪs.tɪk/
1.
không thực tế
having a wrong idea of what is likely to happen or of what you can really do; not based on facts:
:
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I think these sales forecasts are unrealistic, considering how slow sales are at present.