harmful

harmful的音标是[ˈhɑːmfl]，基本翻译是“有害的”。速记技巧是：字母组合ul发/ʊ/。

Harmful这个词的词源可以追溯到拉丁语词根“harm”或“pernicere”，意为“有害的”或“有害地生长”。它的词源可以追溯到古罗马时期，当时人们认为某些植物或物质会对人体健康造成伤害。

Harmful这个词的基本形式是“harmful”，没有变化形式。但是，它可以通过添加前缀或后缀形成一些派生词，例如“harmfully”表示“有害地”， “harmlessness”表示“无害的”。

相关单词：

1. harm - 伤害，损害

2. harmful - 有害的

3. harmfully - 有害地

4. harmlessness - 无害性

5. harmful substance - 有害物质

6. harmful effect - 有害影响

7. harmful radiation - 有害辐射

8. harmful behavior - 有害行为

9. harmful agent - 有害物质

10. harmful waste - 有害废物

这些单词都与harmful这个词有关，表示有害的、对健康有害的或对环境有害的事物或行为。这些单词在英语中广泛使用，并被用来描述各种有害的事物和现象。

常用短语：

1. be harmful to

2. harmful substance

3. harmful radiation

4. harmful effect

5. harmful bacteria

6. harmful waste

7. harmful environment

例句：

1. Smoking is harmful to health.

2. Excessive drinking is harmful to the body.

3. Exposure to harmful radiation can cause cancer.

4. The chemical in the ink can be harmful to the eyes.

5. Bacteria in dirty water can cause food poisoning.

6. Waste disposal without proper treatment can be harmful to the environment.

7. A polluted environment can affect our health and quality of life.

英文小作文：

Protecting Our Environment

Environmental pollution and harm caused by harmful substances have become a serious problem in modern society. We must take action to protect our environment, because it is our home and we need it to live. We should reduce the use of harmful substances, recycle waste, and reduce carbon emissions to protect our planet. We should also plant more trees and flowers to absorb carbon dioxide and release oxygen, which will help improve air quality and provide a better living environment for us and future generations. In conclusion, protecting our environment is everyone"s responsibility, and we should take action to protect our planet today!