“大片私有土地”可以翻译为 “a vast expanse of privately-owned land” 或 “a large tract of privately held land” 。
“vast expanse” 强调面积广阔、范围大；“privately-owned” 清晰表明是私人所有。
“large tract” 同样表示大片土地；“privately held” 也是“私人持有、私有”的意思 。