hypocaust

详细解释:n. 火坑式供暖, 热坑

详细解释：

hy.po.caust

n.（名词）
A space under the floor of an ancient Roman building where heat from a furnace was accumulated to heat a room or a bath.
炕：古罗马建筑地面以下的空间，在那儿火炉的热聚集给房子或沐浴供暖

来源：
Latin hypocaustum
拉丁语 hypocaustum
from Greek hupokauston
源自 希腊语 hupokauston
from hupokaiein [to light a fire beneath]
源自 hupokaiein [在…之下燃起一团火]
hupo- [hypo-]
hupo- [前缀，表.低于….的意思]
kaiein [to burn]
kaiein [燃烧]