She has been beaten only once in six starts.

她参加了六次比赛，只败过一次。

Ann wore it only once.

安只穿过它一次。

The operation should be done only once for each mode.

此操作对于每个模式来说只进行一次。

Both the passage and the questions will be spoken only once.

短文和问题仅读一遍。

Both the passages and the questions will be spoken only once.

短文和问题只念一次。

This is why many viruses, such as measles, make us ill only once.

这就是为什么许多病毒，如麻疹，只会使我们生病一次。

Both the conversation and the questions will be spoken only once.

对话和问题仅播放一遍。

Both the conversations and the questions will be spoken only once.

对话和问题仅读一遍。

Both of these scenarios imply that specialization to each niche occurred only once.

这两套不同的理论都意味着，适应不同的栖息地生活环境的这一过程只发生了一次。

An episode of major depression may occur only once in a person's lifetime, but more often, it recurs throughout a person's life.

重度抑郁发作可能在一个人的一生中仅出现一次，但更经常的是，它在一个人的一生中反复出现。

Each choice should be used only once.

每个选项只能选一次。

They are easy to break, most of them can be used only once.

它们很容易损坏，大多数只能使用一次。

The shopping mall has been open for two years, but I have been there only once.

这个购物中心开业两年了，但我只去过一次。

Both the news report and the questions will be spoken only once.

新闻报道和问题都只读一次。

Radars used to track storms can detect water in the atmosphere only once it has condensed into clouds or raindrops.

用于跟踪风暴的雷达只能在大气中凝结成云或雨滴后才能够探测到水。

To guarantee that the header is processed only once in a given source file, we start by testing the #ifndef.

为了保证头文件在给定的源文件中只处理过一次，我们首先检测 #ifndef。

I've met her only once.

我只见过他一次。

Only once did I bear resentment after being beaten.

我在挨打后只怨恨过一次。

Some weeks she ran only once.

几周中她只跑了一次。

I've played golf only once.

我只打过一次高尔夫球。

B Only once. It's quite difficult!

b只打过一次。太难了！

The method will be called only once.

这种方法只调用一次。

I heard him plead in court only once.

我只有一次听到他在法庭上作辩护。

I have been there only once this year.

我今年只去过那儿一次。

You need to set up the program only once.

您只需要创建程序一次。

It should be done only once for each mode.

此操作对于每个模式来说只进行一次。

Once identified, they are stored only once.

一旦识别，他们将只存储一次。