详细解释:n. 金属镜, 反射镜, 扩张器
【医】 窥器, 张开器; 透明隔; 翼斑, 翼镜(鸟)
词型变化：
名词复数:specula英语解释：
名词 speculum:
a mirror (especially one made of polished metal) for use in an optical instrumenta medical instrument for dilating a bodily passage or cavity in order to examine the interior