在刀尖跳舞（dancing on the edge of a knife）是一个俗语，意思是做一件事情的风险很大，处在一个危险的境地。这个俗语的起源可能源自于古希腊或古罗马时期，当时刀片比较薄，如果在刀尖上跳舞，容易踩穿刀片。
下面是一些用英文表达在刀尖跳舞的例句：
"He's always dancing on the edge of a knife with his high-risk investments." （他总是冒险投资，就像在刀尖跳舞一样。）
"I feel pke I'm dancing on the edge of a knife at my job. One wrong move and I could lose everything." （我觉得自己的工作就像在刀尖跳舞一样。一个不当的动作就可能失去一切。）
"She's always testing the pmits and dancing on the edge of a knife. It's part of what makes her such an exciting performer." （她总是在挑战极限，就像在刀尖跳舞一样。这也是她成为如此令人兴奋的表演者的原因之一。）
下面是一些用英文表达在刀尖跳舞的例句：
"He's always dancing on the edge of a knife with his high-risk investments." （他总是冒险投资，就像在刀尖跳舞一样。）
"I feel pke I'm dancing on the edge of a knife at my job. One wrong move and I could lose everything." （我觉得自己的工作就像在刀尖跳舞一样。一个不当的动作就可能失去一切。）
"She's always testing the pmits and dancing on the edge of a knife. It's part of what makes her such an exciting performer." （她总是在挑战极限，就像在刀尖跳舞一样。这也是她成为如此令人兴奋的表演者的原因之一。）