A unit of area in the U.S. Customary System,used in land and sea floor measurement and equal to 160 square rods,4,840 square yards,or43,560 square feet.是什么意思_A unit of area in the U.S. Customary System,used in land and sea floor measurement and equal to 160 square rods,4,840 square yards,or43,560 square feet.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句