The conflict was violent, known to history as Bleeding Kansas.
这场冲突很激烈，历史称之为堪萨斯内战。
Throughout history, only one Earth has been known to exist in the universe. Soon there may be another.
纵观历史，人们仅知道宇宙中只有一个地球存在，然而，用不了多不久，可能会出现一个新的，接着，又是一个。
As is known to all, China is a country with a long history.
众所周知，中国是一个历史悠久的国家。
Women with no history of heart attack are known to suffer from the condition.
没有患过心脏病的女性通常会有类似症状。
Let us ask, has history ever known a long march to equal ours?
请问历史上曾有过我们这样的长征吗？
Let us ask, has history ever known a long march to equal ours?
请问历史上曾有过我们这样的长征吗？
应用推荐