all at once

all at once的音标是[ɔːl ɑːt ∧m]，翻译成中文是“突然地；一下子；同时”。

速记技巧：可以尝试使用谐音“奥啊特阿木”，这样更有利于记忆。

All at once的英文词源是拉丁语，意为“同时，一齐”。这个词在英语中用来表示突然发生或同时发生的事情。

变化形式：All at once是副词，没有变化形式。

相关单词：

1. "simultaneously"：意为“同时发生地”，来源于拉丁语simul，意为“同时”。

2. "instantaneously"：意为“立即地，即刻地”，由instant和副词词缀-ly构成。

3. "concurrently"：意为“同时地”，由con-和-cly构成，表示共同发生。

4. "synchronously"：意为“同时地”，由syn-和-chron-构成，表示时间上的同步性。

5. "all at once"的近义词"suddenly"：意为“突然地”，来源于拉丁语中的动词词缀-surge，表示出现或发生的事情出乎意料。

以上这些单词都与all at once有着密切的联系，表示同时发生或突然发生的事情。这些单词在英语中广泛使用，描述各种不同的情况和场景。

常用短语：

1. all at once

2. all of a sudden

3. in a flash

4. on the spur of the moment

5. out of the blue

6. instantaneously

7. in no time at all

例句：

1. "All of a sudden, the doorbell rang."（突然，门铃响了。）

2. "He sprang into action all at once."（他立刻行动起来。）

3. "The idea came to me in a flash."（我突然有了这个想法。）

4. "She felt an overwhelming sense of relief all at once."（她立刻感到了无比的宽慰。）

5. "He received the news out of the blue."（他突然接到了这个消息。）

6. "The project was completed in no time at all."（这个项目很快就完成了。）

英文小作文：

All at once, I realized that my life had changed dramatically. I had been feeling overwhelmed with work and responsibilities, but now, I had the opportunity to take a break and recharge my batteries. I decided to go for a long walk in the park, and as I walked, I felt the stress melt away. I realized that I needed to take time to relax and rejuvenate, because it was essential for my mental and physical health. I also realized that I needed to prioritize my time and energy more carefully, so that I could better manage my responsibilities and still have some fun in my life. Now, I try to take time for myself every day, whether it"s a short meditation or a long hike in the woods. It"s important to remember that balance is key to a happy and fulfilling life.