chlordan

chlordan的音标是[ˈklɔːrdən]，基本翻译是氯原子团，速记技巧可以是联想记忆：chloro表示氯，d表示双键，an表示原子团。

Chlor(o)的英文词源可以追溯到拉丁语词源“chlorus”，意为“绿色的”。其变化形式包括：

1. Chloride：氯化物，由chlor和ide组成，意为“被氯化的”，通常指由氯与其他元素形成的化合物。

2. Chlorophyll：叶绿素，由chlor和phyll组成，意为“绿色的叶”，是植物进行光合作用的主要色素。

相关单词：

1. Chloroform：氯仿，一种有机化合物，因其具有类似氯气的毒性，常用于麻醉。

2. Chlorine：氯，一种非金属元素，是氯气的化学名称，也是许多化合物的构成元素。

3. Chlorosis：黄化病，一种植物疾病，因缺乏叶绿素而得名。

4. Chloroform anesthesia：氯仿麻醉，一种使用氯仿进行麻醉的方法。

5. Chloroformate：氯甲酸酯，由氯和甲酸酯组成，是一种有机化合物。

Chlordan这个词在英语中并不常见，也没有明确的含义或关联的元素或化合物。在英语中，通常使用其他与“绿色”或“氯”相关的词汇来表示这些概念。以上回答仅供参考，如果需要更多详细信息，可以查阅专业词典或相关文献。

常用短语：

1. by the chalk

2. in a trice

3. on chalk

4. under chalk

5. at one"s chalk

6. with chalk

7. on the chalky side

双语句子：

1. I drew a chalk picture of my dog.

2. She quickly drew a chalk horse for the children.

3. The teacher wrote the lesson on the blackboard with chalk.

4. The children drew pictures with chalk on the pavement.

5. He drew a chalk line around the perimeter of the yard.

6. The chalk marks on the ground indicated where to park.

7. The teacher erased the chalkboard after class.

英文小作文：

Chalk and Talk: A Simple but Effective Teaching Method

Chalk and talk is a simple but effective teaching method that has been used for centuries in classrooms around the world. It involves the teacher writing or drawing on the blackboard while explaining a topic or lesson to the students, and then asking them to discuss and share their understanding of what has been taught. This method helps students to actively participate in the learning process, and it also provides them with an opportunity to practice speaking and listening skills in a classroom setting. Additionally, chalk and talk helps to reinforce key concepts and ideas, and it helps to create a sense of community and collaboration among students and teachers. I have used this method in my own teaching, and I have found it to be an effective way to engage students and help them to develop their academic skills and understanding of subject matter.