详细解释:n. 谷仓
【化】 靶(恩)(核反应截面单位)
【医】 靶[恩]
英语解释：
名词 barn:
an outlying farm building for storing grain or animal feed and housing farm animals(physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter同义词：b