(US 美 ˌdouble-ˈbarreled) adj 1 (used about a gun 指枪) having two long metal tubes through which bullets are fired(barrels) 双管的
2 (used about a family name 指姓氏) having two parts, sometimes joined by the mark (-) (a hyphen) 由两部份组成的（有时中间用连字符 (-) 连接）: Mr Day-Lewis 戴-刘易斯先生