释义
n.
a thing of a type that is larger than normal, in particular
大于正常尺寸之物，尤指：
a wine bottle of twice the standard size, normally 1((1/2)) litres
（比普通酒瓶大一倍的）大酒瓶（通常容量为１.５升）。
[often as modifier](trademark in the US)a gun designed to fire cartridges that are more powerful than its calibre would suggest
〈美国商标〉 大威力子弹枪械（指能发射杀伤力比其口径所示威力更大的枪械）。
词源
"late 18th cent.: from Latin, neuter （used as a noun） of
