大规模: large scale, extensive, wide scale, broad scale...
公顷: hectare...
长征: expedition, long journey...
灵活: flexible, nimble, agile...
概念: concept, idea...
半: half, semi-, incomplete, (after a number) and a half...
窑: kiln; stove...
栽: to grow, to plant, to insert, to force on sb, to fall head first...
棋子: chess piece, a pawn (used by others for their own purposes)...
段: paragraph, section, segment, stage (of a process), classifier for stories, periods of time, lengths of thread etc...