costliest

costliest的音标是[ˈkɒstlaɪst]；基本翻译为“最昂贵的，代价最高的”；速记技巧为：cost+liest表示“代价最高的”。

costliest 这个词来自于 cost（成本，费用）+ -liest（形容词后缀，表示“最…的”）。它的变化形式主要有比较级 more costly，最高级 most costly。

相关单词：

1. cost：表示“成本，费用”的意思，可以作为名词和动词使用。

2. costly：表示“昂贵的”意思，是 cost 的形容词形式。

3. costumer：表示“顾客”的意思，是 cost 的复数形式，常用于商业领域。

4. cost-benefit analysis：表示“成本效益分析”的意思，是一种经济分析方法。

5. cost-down：表示“成本控制”的意思，是一种管理方法。

6. cost-effective：表示“成本效益高的”意思，常用于商业领域。

7. budget：表示“预算”的意思，是 cost 的常用名词形式。

8. overcost：表示“高估成本”的意思，常用于商业领域。

9. underestimate：表示“低估成本”的意思，常用于商业领域。

10. outsource：表示“外包”的意思，是一种商业策略。

常用短语：

1. costliest disaster

2. at a costliest price

3. the costliest decision

4. pay the costliest price

5. incalculable costliest losses

6. at a heavy costliest price

7. the costliest toll

例句：

1. The hurricane was the costliest disaster of the year.

2. They made the costliest decision of their lives.

3. He paid the costliest price for his principles.

4. The losses were incalculable costliest losses.

5. The accident caused a heavy costliest price to be paid.

6. The war took a toll on the lives of millions.

7. The project will have long-term effects on the economy, but at what costliest?

英文小作文：

The Costliest Lesson of Life

Life is full of lessons, some easy to learn, while others are much more difficult to grasp. One of the costliest lessons I have learned is the importance of time management.

In my younger years, I often spent my days aimlessly wandering, without any sense of urgency or purpose. But as time went by, I realized that my lack of focus and discipline was costing me precious opportunities and relationships.

Now, I understand that time is a valuable resource that cannot be replicated. Each moment must be used wisely, and I must prioritize my tasks and goals to ensure that I am making the most of my life.

By prioritizing my time and setting realistic goals, I have been able to achieve more in a shorter period of time, while also maintaining a healthy work-life balance. This has not been without its challenges, but I have learned that success is not solely measured by material possessions or external achievements. Instead, it is about finding fulfillment in the moments that matter most – the relationships we build, the moments we cherish, and the choices we make that truly matter.

In conclusion, time management is one of the costliest lessons I have learned in life, but it has been worth every moment of struggle and effort. It has taught me to appreciate every moment of life and to make the most of every opportunity that comes my way.