expert at

expert at的音标是[ɪkˈspɜːrt ət]，基本翻译是“擅长于……的专家；擅长……的人”。速记技巧是：expert以pr结尾，at是介词，所以expert at意为“擅长某事的人”。

Expert at 的英文词源是拉丁语 expertus，意为“熟练的，精通的”。其变化形式包括名词形式 expert 和形容词形式 expert。相关单词包括：

1. Expertise：专业知识，技能。

2. Expert opinion：专家意见。

3. Expert witness：专家证人。

4. Expert system：专家系统。

5. Expertise acquisition：技能获取。

6. Expertise evaluation：技能评估。

7. Expertise development：技能发展。

8. Expertise management：技能管理。

9. Expert-based learning：基于专家指导的学习。

10. Expert-assisted learning：专家辅助学习。

Expert at 在这些单词中的使用，体现了其在英语中的广泛应用和重要性，也反映了其在不同语境下的灵活性和多样性。

常用短语：

1. expert in a field

2. an expert on a subject

3. expert in handling a situation

4. an expert in a field of study

5. an expert in a profession

6. an expert in a field of knowledge

7. an expert in a specific area

例句：

1. He is an expert in the field of computer science.

2. She is an expert on the subject of language learning.

3. They consulted an expert in handling the crisis.

4. She is an expert in the field of education and has written several books on the subject.

5. He is an expert in his profession as a doctor.

6. She is an expert in the field of environmental science and has conducted research on the effects of climate change on the planet.

7. As an expert in the field of technology, I believe that we need to invest more in research and development to ensure that we have the best technology available to us.

英文小作文：

I am an expert in the field of technology and I believe that technology has the potential to change our lives for the better. However, we need to be aware of the risks and challenges that come with this potential and ensure that we are investing in research and development to address these issues. Technology has the ability to connect people from all over the world, provide access to information and resources that were previously unavailable, and improve our quality of life in many ways. However, it also has the potential to create new problems and challenges that we need to be aware of and address as a society. Therefore, as an expert in the field of technology, my goal is to help shape a future that is safe, secure, and beneficial for all of us.