a one-way ticket to
US /ə wʌn-weɪ ˈtɪkɪt tuː/
UK /ə wʌn-weɪ ˈtɪkɪt tuː/

1.
一張去...的單程票
a ticket that allows a person to travel to a place but not back
:
•
I bought a one-way ticket to London, as I plan to move there permanently.
我買了一張去倫敦的單程票,因為我打算永久搬到那裡。
•
He booked a one-way ticket to Paris, hoping for a new beginning.
他預訂了一張去巴黎的單程票,希望能有一個新的開始。
2.
通往...的單程票, 一條不歸路
something that leads to a permanent or irreversible situation
:
•
Ignoring the problem is a one-way ticket to disaster.
忽視問題是通往災難的單程票。
•
His reckless behavior was a one-way ticket to trouble.
他魯莽的行為是通往麻煩的單程票。