acre
/ˈeɪkə(r)/noun
1- a unit of land area equal to 4,840 square yards (0.405 hectare)英亩（相当于4,840平方码, 即0.405公顷）。
1.1
acres of
informal a large extent or amount of something〈非正式〉大片, 大量：acres of space.
广阔的空间。
派生词
acred
adjective好几英亩大的公园。
词源
Old English æcer (denoting the amount of land a yoke of oxen could plough in a day)， of Germanic origin; related to Dutch akker and German Acker 'field'， from an Indo-European root shared by Sanskrit ajra 'field'， Latin ager, and Greek agros.