The last-minute gate change caused confusion among passengers waiting for the Tokyo flight.

臨時更換登機門，讓等候飛往東京班機的旅客一陣混亂。

To avoid confusion, please use the new invoice numbers starting next Monday.

為避免混亂，請從下週一起使用新的發票編號。

There was some confusion at the warehouse after two shipments arrived with identical labels.

兩批貨物貼著相同標籤送達後，倉庫裡出現了一些混亂。