at the cost

at the cost 的音标是[əˈtʃɒst]，基本翻译是“在…代价；以…为代价”，速记技巧是“at”表示在…，“cost”表示花费。

at the cost 的英文词源是 cost，意为“费用，代价”。cost 的词形变化包括名词形式 costs，副词形式 at cost，以及形容词形式 at a cost。

相关单词：

1. budget：意为“预算”，其词源也与 cost 有关，表示“成本，费用”的 budget 在中古英语时代就出现了，后来引申为“预算”。

2. expense：意为“开销，花费”，其词源也是 cost，表示“费用”的单词在古英语时期就已经出现，后来经过演变形成了 expense。

3. cost-effective：意为“成本效益的”，是由 cost 和 effective 组成的合成词，表示“花费少而有效”的意思。

4. overhead：意为“间接费用，管理费用”，是 cost 的派生词，表示除了直接费用以外的所有费用。

以上这些单词都与 cost 有关，体现了成本、费用在商业和财务管理中的重要地位。同时，这些单词也反映了英语词汇的多样性和演变过程。

短语：

1. at the expense of

2. at the cost of

3. at the price of

4. at the risk of

5. at the outset

6. at the drop of a hat

7. at the cost of time and effort

例句：

1. We mustn"t do anything that will cost us our reputation.

2. She agreed to help us at the cost of her own time.

3. At the risk of being misunderstood, I"m going to speak my mind.

4. At the outset, we must recognize that we are all equal partners.

5. At the drop of a hat, he changed his mind.

6. It took me a lot of time and effort to complete that project.

英文小作文：

标题：The Cost of Success

Success is often seen as a reward for hard work, but it can also come at a cost. To achieve success, we often have to put in a lot of time and effort, and sometimes we have to make sacrifices. Success may bring us recognition and financial rewards, but it can also lead to stress, anxiety, and burnout.

On the other hand, failure can also be costly. It can lead to feelings of disappointment and regret, and it can affect our self-confidence and self-esteem. However, failure can also be a valuable lesson, teaching us to persevere and learn from our mistakes.

In the end, the cost of success depends on how we view it and what we are willing to give up to achieve it. Success is not always easy to achieve, but it is worth pursuing if it means achieving our goals and dreams.