How time flew! At the end of the term, there was one important event that he was afraid of — the final exam.

时间过得真快！在学期结束的时候，有一件重要的事情使他害怕——期末考试。

youdao

The effect of this is that if an event handler implements a request-response operation, then only one instance of such an event handler may be active at any point in time.

此规定的结果是，如果某个事件处理程序实现了一个请求-响应操作，则在任何时间点，只能有一个此类事件处理程序的实例处于活动状态。

youdao

If a problem is truly just a one-time event, this approach is acceptable.

如果某个问题真的只是一次性的问题，则此方法是可以接受的。

youdao

The general said the Lebanese Army asked for a cease-fire,and therefore, he believes this was a "one-time event."

VOA: standard.2010.08.03

This is not an one-time event.

这并非一件一劳永逸的事情。

普林斯顿公开课 - 人性课程节选

There's only one event that can bring this many campers together at one time.

VOA: standard.2010.07.31

However, additional analysis may reveal the hit to earnings was a one time event, or maybe even an accounting irregularity.

FORBES: Buy Stocks That Pay, And Can Keep Paying

Definitely not, as Irene is one time event, and as the boost in demand for certain items this week will turn into bust for the same items in the weeks to follow.

FORBES: Is Irene To Provide A Stimulus For The US Economy?

Definitely not, as Sandy is one time event, and as the boost in demand for certain items this week will turn into bust for the same items in the weeks to follow.

FORBES: Is Hurricane Sandy To Provide A Stimulus For The US Economy?