An unfortunate conjunction of circumstances led to his downfall.
一連串不幸事件同時發生,導致了他的下臺。
There is a team of writers working in conjunction (with each other) on the book.
有一個作家小組在合作撰寫這部書。
Mars and Venus will be in exact conjunction on 1 September.
火星和金星在9月1日會正好相合。