Before medical science discovered how the circulatory system functioned,people believed that a vein of blood ran directly from the third finger on the left hand to the heart.

 
  • 在医学发现人体血液循环系统如何工作之前,人们认为静脉血管的血液是从左手的第三只手指直接流向心脏的。
今日热词
目录 附录 查词历史