详细解释:n. 四柱大型卧床
英语解释：
名词 four-poster:
a bed with posts at the four corners that can be used to support a canopy or curtains详细解释：
four-post.er
n.（名词）A bed having tall corner posts originally intended to support curtains or a canopy.有四根帷柱的床：有很高的原意为支持床的华盖或顶棚的角柱的床