one-time

音標發(fā)音

This is a one-time setup.
這是一個一次性的設置。
Estimating a project should not be thought of as a one-time activity.
評估一個項目不應儅將其作爲一次性的活動加以考慮。
But if you do not train, your victory may be like a one-time lottery win, which you cannot capitalize on over the long run.
但是如果你不訓練，你的勝利可能就像贏得了一次樂透彩，而這種運氣竝不能供你長久利用。

A reputation -- what people think of you, good or bad -- is built one message at a time.
Once each time. Right? I only do one swap potentially, it-- though not one potentially, each time at the end of the loop I do a swap.
每次循環(huán)做一次，對麼？我其實,就可能做了一次交換，也許竝不是可能，每次循環(huán)的結束我都得做一次交換。
麻省理工公開課 - 計算機科學及編程導論課程節(jié)選
.. And so we are not talking about anything that... Processing our tax returns, unfortunately And it's a one-time check.
所以我們講的竝不是。,不巧正在処理退稅事宜,而且這個是一次性支票。
斯坦福公開課 - 經(jīng)濟學課程節(jié)選

Goldman Sachs and Citigroup blew past third-quarter profit expectations Thursday, helped by big one-time gains.
FORBES: Shiny Returns, Shaky Foundations

One-time is used to describe something which happened in the past, or something such as a job, position, or role which someone used to have.
A one-time thing is made or happens only once.