Definition: a unit for measuring area, equal to 4047 square metres Level: C2
他在威尔士拥有400英亩土地。
He owns 400 ___acres of land in Wales.
计划是每英亩种植10,000棵树。
The plan was to plant 10,000 trees per ___acre.
这个国家公园占地超过5000英亩。
The national park covers an area of over 5000 ___acres.
