【四级】The castle, which is located on 11,700 acres, was leased to members of the royal family between 1848 and 1970, including King Edward VII and George V.
【六级】The national average farm size is around 440 acres, but his is only one acre.
【六级】One acre of farmland use to for raising cows can produce 250 pounds of beef.
【六级】Facing water shortages and escalating fertilizer costs, farmers in developing countries are using raw sewage ( ' , 下 水道污水) to irrigate and fertilize nearly 49 million acres of cropland, according to a new report—and it may not be a bad thing.
面对水资源短缺和化肥成本不断上升，发展中国家的农民正在使用未经处理的污水（“，下 水道污水) 根据一份新的报告，灌溉和施肥近4900万英亩的农田，这可能不是一件坏事。
【六级】One acre of farmland use to for crop production can produce 1,500 pounds of tomatoes
【四级】At other times the cow wandered around the 526 acre park and the artificial grass field normally used for human sporting events.
【六级】It is polluting millions of acres of cropland.
【考研】Negotiated by USFWS and the states, the plan requires individuals and businesses that damage habitat as part of their operations to pay into a fund to replace every acre destroyed with 2 new acres of suitable habitat .
【高考】On a mere 1/10 of an acre in Los Angeles, Loe and her family grow, can(装罐) and preserve much of the food they consume.