attained

"attained"的音标为[əˈteɪnd]，基本翻译为"获得，达到；达到的，获取的"。速记技巧可以考虑将其分解为"a-t-t-r-a-i-n"进行记忆，其中"a"代表一个单词的开头，"t"代表时间，"tribute"中的"ribute"可以表示付出努力，而"i-n"则代表最终获得的结果。这样可以将单词分解为几个部分进行记忆，提高记忆效率。

"Attain"这个词的词源可以追溯到拉丁语"ad-tainere"，意为“抓住，获得”。它的变化形式包括过去式"attained"，现在分词"attaining"，以及形容词"attainable"。

相关单词：

1. "Achievement"：这个词是由"achieve"和"ment"组成的名词形式，表示“成就，完成”。这个词与"attain"有相似的含义，都表示获得成功或达到目标。

2. "Attainment"：这个词是由"attain"和"ment"组成的名词形式，表示“成就，达到”。它通常用于描述一个人或团体在某个领域中的成就。

3. "Attainable"：这个词表示“可以达到的，可获得的”。它通常用于描述一个目标或期望，如果努力可以达到的话。

以上这些单词都与"Attain"这个词有密切的联系，都表示获得成功或达到目标的意思。它们在英语中广泛使用，并被用来描述各种情况下的成就和达到。

至于变化形式和相关单词的数量，这主要取决于具体的语境和用法。在一般情况下，"Attainable"是一个比较常用的单词，而"Achievement"、"Attainment"等词则更多地用在特定的语境中。总的来说，这些单词在英语中都是非常常用的词汇，对于表达各种意思和语境都有很大的帮助。

至于字数限制，我尽量在100字以内解释了这些单词的词源和主要含义，并举了一些相关的例子。如果需要更多的信息或解释，欢迎提出。

常用短语：

1. attain success

2. attain one"s goal

3. attain knowledge

4. attain power

5. attain wealth

6. attain fame

7. attain one"s dreams

例句：

1. After years of hard work, he finally attained success in his career.

2. She attained her goal of becoming a doctor, and now she is happy and fulfilled.

3. Only through continuous learning and effort can we attain knowledge of the world.

4. He attained power by cunning and deceit, but in the end, he paid the price for his actions.

5. Success in business requires the ability to attain wealth, and this requires hard work and perseverance.

6. She attained fame for her outstanding performance in the film, and now she is enjoying the fruits of her labor.

7. After years of dreaming, he finally attained his dream of becoming a professional artist.

英文小作文：

Success is a journey that requires hard work, dedication, and perseverance. It is a reward that is well worth achieving, but it is not easy to attain. Success brings happiness and fulfillment, but it also brings challenges and difficulties that must be overcome. However, with the right attitude and effort, success can be achieved. It requires setting goals, working hard, learning from mistakes, and never giving up. Success is not just about achieving a goal or attaining wealth or fame, but about living a fulfilling life and making a positive impact on others. Therefore, we should always strive to attain success in our lives, no matter what our goals may be.