at sixes and sevens 乱七八糟；困惑的；混乱的；杂乱无章的

【例句】
The boy made the room at sixes and sevens.
这男孩把房间弄得乱七八糟的。

Things happened so fast that Mary was at sixes and sevens.
事情发生得如此快，以致玛丽心绪烦乱。