Valiant به انگلیسی
From Longman Dictionary
val‧i‧ant /ˈvæliənt/ adjective
very brave, especially in a difficult situation
بسیار شجاع، به خصوص در شرایط دشوار
No outcome seems too impossible or, at least, unworthy of valiant effort
Despite valiant efforts, firemen were unable to save the house
The Forestry Commission are making valiant efforts to re-create these old woodlands, and are trying to preserve the little that remains
At least that’s what I gather from watching Art Jacobson’s futile but valiant efforts to build community on the Internet
The Forestry Commission are making valiant efforts to re-create these old woodlands, and are trying to preserve the little that remains