at sixes and sevens 乱七八糟，七零八落的

a nine day’s wonder 昙花一现的人或者物

dress up to the nines 穿好看的衣服

sixty-four dollar question is...

最困难的问题是。。。

They couldn't come to an agreement. They were at sixes and sevens.

他们无法达成一致，意见根本就不统一！

The sixty-four dollar question is you don't have time

最重要的问题是你没有时间

The sixty-four dollar question is I don't have enough money

最重要的问题是我没钱

Don’t worry about the story about you in the newspaper. It’ll be a nine day’s wonder and then people will forget.

别为报上有关你的报道担心。它会轰动一时，但很快就将被人们遗忘。

She will dress up to the nines for her date.

她会穿上漂亮的衣服去赴这次约会。