"Aldehydes" 的音標為 [??ld?ha?dz]，翻譯為“醛類”。

速記技巧：使用首字母來記：A代表醛（aldehyde）的“醛”字拼音的首字母，D代表“類”的拼音首字母。

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Aldehydes，即醛類化合物，其英文詞源可以追溯到拉丁語中的“aldea”，意為“醛”，而“hidro”則表示“氫”。

變化形式包括：

1. aldehyde - 醛基，是醛類化合物的基本組成部分，常用于有機化學中表示醛類化合物的特征結構。

2. alcohol - 醇類，是由羥基與烴基相連的化合物，與醛類化合物在性質上相似。

3. acid - 酸，是由羧基與烴基相連的化合物，與醛類化合物在性質上相反。

相關單詞：

1. acetone - 丙酮，是一種無色、易揮發的有機化合物，具有特殊的刺激性氣味，可以與醛類化合物反應生成其他化合物。

2. methanol - 甲醇，是一種無色、具有特殊氣味的液體，具有毒性，可以與醛類化合物反應生成其他醇類化合物。

3. butanal - 丁醛，是一種無色、具有特殊氣味的液體，是丁醇的對應物，具有多種化學性質。

以上這些單詞都是與醛類化合物密切相關的有機化合物，它們在化學、生物學和工業生產中都有廣泛的應用。

常用短語：

1. aldehydes in wine

2. aldehydes in food

3. aldehydes in air

4. aldehydes in tobacco smoke

5. aldehydes in perfumes

6. aldehydes in paints

7. aldehydes in cosmetics

雙語例句：

1. The smell of aldehydes is often associated with the aroma of perfumes and colognes.

2. Aldehydes are a common component of tobacco smoke and are responsible for the characteristic smell of cigarette smoke.

3. Aldehydes are also found in wine and can contribute to its unique flavor.

4. Exposure to aldehydes can cause irritation to the respiratory system and other organs.

5. The production of aldehydes is a crucial step in the chemical reactions that occur during the polymerization process.

6. The presence of aldehydes in paints and cosmetics can affect their stability and shelf life.

英文小作文：

Aldehydes are a group of organic compounds that are commonly found in nature and are produced by the degradation of organic substances such as fats and sugars. They are also produced during various chemical reactions and industrial processes. Aldehydes have a characteristic odour that is often described as pungent or sharp, and they are responsible for many of the unique flavours and odours found in food, beverages, perfumes, tobacco smoke, paints, and cosmetics.

However, aldehydes can also be harmful to human health, especially when present in high concentrations or for prolonged periods of time. Exposure to aldehydes can cause irritation to the respiratory system and other organs, and they can also be carcinogenic in high doses over a long period of time. Therefore, it is important to ensure that the levels of aldehydes present in various products are kept to a minimum, and that any exposure to them is kept to a safe level.