copper-bottomed

copper-bottomed的音标为["kɔpə,bɔtɪd]，意思是“确实的；坚定的”。

速记技巧：可以记成“copper bottom”=铜底，因为铜的特性就是非常坚固，所以铜底也就可以代表坚定不移的。

Copper-bottomed这个词源自拉丁语，意为“铜制的底部”。它的变化形式包括其复数形式copper-bottomeds，过去式copper-bottomed和现在分词copper-bottoming。

相关单词：

1. Copperplate - 铜版印刷，一种早期的印刷技术。

2. Bottoming out - 股票或货币价格下跌至最低点，即将崩溃。

3. Copperhead - 一种蛇的名字，也用来形容顽固不化的人，因为这种蛇在冬天会蜷缩成一团，看起来像一根绳子。

4. Copper-fasten - 固定，使牢固。这个词源于铜的坚固性，可以用来形容牢固的连接或固定。

5. Copper-fastners - 固定物，如钉子、螺丝等。

6. Copper-bottomed - 铜制的底部，坚固的，可靠的。这个词可以用来形容某物非常坚固或可靠。

7. Copper-bottomed guarantee - 坚固可靠的保证，通常用于描述某种服务或产品的质量保证。

8. Copper-bottomed commitment - 坚定的承诺，通常用于描述政府或组织对某种政策或计划的坚定支持。

9. Copperbottom - 一种鸟的名字，也用来形容底部非常坚固的东西。

10. Bottom copper - 铜制的底部，也用来形容底部非常坚硬或厚实的东西。

以上这些单词都与copper-bottomed这个词源有着密切的联系，它们都反映了铜在各种应用中的坚固、可靠和稳定性。

常用短语：

1. copper-bottomed policy（坚定的政策）

2. bottoms up（全部喝干）

3. on the bottom line（在底线之上）

4. bottom up approach（自下而上的方法）

5. bottom feeder（底层食客）

6. on the bottom shelf（处于困境）

7. bottom dollar（最低的金额）

例句：

1. We must adopt a copper-bottomed policy to ensure that every citizen has equal rights and opportunities.

2. She poured her drink in a copper-bottomed gesture of goodbye.

3. The company"s profits are on the bottom line, but its future prospects are looking brighter.

4. The teacher used a bottom-up approach to teaching, allowing students to work out problems on their own.

5. He"s been on the bottom shelf since his boss fired him for incompetence.

6. The government has promised to increase spending on education to ensure that every child has a chance to succeed, regardless of their family"s financial situation.

7. The bottom dollar is crucial for many businesses, especially those that rely on consumer spending.

英文小作文：

Title: Copper Bottomed Security

In today"s world, security is paramount, and it is essential to have a copper-bottomed policy to ensure safety and stability. From protecting our borders to ensuring the safety of our citizens, we must take every precaution to ensure that our country is secure.

However, security is not just about physical safety, it is also about mental and emotional safety. We must also focus on providing support and resources to those who are vulnerable or marginalized, so that they can feel safe and secure within their own communities.

Moreover, we must also recognize that security is a shared responsibility, and we must work together with other countries and organizations to ensure that our world is safe and secure for all. By collaborating and sharing resources, we can create a safer and more secure world for future generations.