black draft

详细解释:【医】 黑色顿服剂(复方番泻叶浸剂)

例句：

Any of a breed of gray or black draft horse originally used in France for drawing artillery and heavy coaches but now bred in other countries for general purposes.柏雪龙马一种产自法国的灰色或黑色的马，用来拉火炮和四 * 马车，现在其它国家大量养做它用