standing up on tiptoes
"Oh,you see,mum,I was standing up on tiptoes,I can do that!"said the three years old boy.
"That's good,darling,but I want you to be a famous dancer,you must walk with tiptoes,do you know?"
“啊,妈妈,你看,我能踮起脚来了,我能够做到了。”那个三岁的男孩说道。
“真不错,亲爱的,但是我想让你成为一名著名的舞蹈家,你必须学会用脚趾尖走路,你明白吗?”