Defoliants

Defoliants的音标为[dɪ"fəʊlɪənts]，翻译为“脱叶剂”。

速记技巧：使用缩写或简写可以帮助记忆和快速识别单词。在这个例子中，可以将Defoliants简化为Defoliant或Df。这样，您就可以轻松地记住这个单词，并在需要时快速识别它。

Defoliants是指一种能够使植物叶子脱落的化学物质。这个词的词源可以追溯到拉丁语“defolians”，意为“剥落”。

变化形式：在英语中，defoliant一词通常被简化为defoliator。

相关单词：

1. herbicide：一种能够杀死或抑制特定植物的化学物质，通常用于除草或控制杂草。这个词源自希腊语“herba”，意为“草”。

2. desiccant：一种能够使植物或物体干燥的化学物质，通常用于加速干燥过程。这个词源自拉丁语“desiccare”，意为“干燥”。

3. defoliation：植物叶子脱落的过程或结果。这个词源自defoliant和动词词组“to defoliate”，意为“剥落”。

4. defoliation treatment：一种用于使植物叶子脱落的化学处理方法。

5. defoliator：剥落植物叶子的工具或设备。

6. defoliator insect：一种能够影响植物生长并导致叶子脱落的昆虫。

7. defoliation agent：一种能够使植物叶子脱落的化学物质或制剂。

8. defoliant spray：一种用于喷洒植物以使其叶子脱落的化学物质溶液。

9. defoliant herbicide：一种同时具有除草和剥落植物叶子的化学物质。

10. defoliant mixture：一种混合了多种化学物质的制剂，用于剥落植物叶子。

常用短语：

1. defoliate the trees

2. defoliant spray

3. defoliate the crops

4. herbicide defoliant

5. defoliate the plants

6. herbicide spraying

7. defoliation treatment

例句：

1. The farmer used a defoliant spray to clear the trees of their leaves.

2. The defoliant spray caused the crops to die, leaving only the roots intact.

3. The herbicide defoliant was used to remove the plants from the field.

4. The defoliation treatment was carried out to prepare the forest for logging.

5. The herbicide spraying caused widespread damage to the crops and livestock.

6. The trees were defoliated by a severe winter storm.

7. The defoliant spray was used to clear the jungle of its undergrowth.

英文小作文：

Defoliants are chemicals used to remove plants from their leaves, usually for agricultural or environmental reasons. Defoliants can be used to control weeds, reduce pests, or prepare forests for logging. However, they can also cause harm to humans and animals if used improperly or in large quantities. Therefore, it is important to use defoliants carefully and safely, and to follow all safety precautions and regulations. Defoliants can also be used in combination with other methods of plant control, such as mechanical methods or biological control agents, to achieve optimal results while minimizing harm to the environment and human health.