ara-A的音標為[??re?t?] ,基本翻譯為“ara-A”在英文中沒有特定的含義,它可能是一個人名或一個詞的縮寫。速記技巧為注意字母組合“a-”的發音,在單詞中它一般發/?/。
ARA-A(反式-1,4-聚異戊二烯)是一種天然的橡膠化合物,其英文詞源可以追溯到拉丁語和希臘語。其英文名稱為“ara-A”,是由“ara”和“A”兩個部分組成。“ara”可能來自于拉丁語“arare”,意為“耕種、開墾”,而“A”則可能來自于希臘語“alpha”,意為“第一、主要的”。
變化形式:
1. 反式-1,4-聚異戊二烯(trans-1,4-polyisoprene)是ARA-A的常見形式,其中“trans”表示分子中的碳鏈是反向排列的。
2. 它的衍生物可能包括ARA-B(順式-1,4-聚異戊二烯),其分子中的碳鏈是順向排列的。
相關單詞:
1. 異戊二烯(isoprene):一種具有高度反應性的化合物,是橡膠的基本成分之一。
2. 聚合物(polymer):由許多相同或不同的分子聚集而成的物質。
3. 二烯烴(diene):含有兩個雙鍵的烴類化合物。
4. 順式-1,4-聚合物(cis-1,4-polymer):指分子中兩個雙鍵在同一條直線上,具有特定結構的聚合物。
5. 橡膠(rubber):一種具有高彈性、絕緣性和可塑性的材料。
6. 合成橡膠(synthetic rubber):由人工合成或合成方法制成的橡膠。
7. 天然橡膠(natural rubber):從橡膠樹中提取的天然高分子化合物。
8. 異構體(isomer):具有相同分子式,但結構不同的一類化合物。
9. 二烯烴聚合物(diene polymer):由二烯烴作為單體聚合而成的聚合物。
10. 反式聚合物(trans-polymer):指分子中碳鏈反向排列的聚合物,在某些情況下,反式聚合物具有更好的性能。
常用短語:
1. A-Z list
2. All in one
3. At a time
4. At will
5. Behind the scenes
6. By all means
7. For all intents and purposes
雙語句子:
1. At a time, I can only handle one task at a time. (每次我只能處理一件任務。)
2. Behind the scenes, things are often not what they seem. (幕后,事情往往不是表面看起來那樣。)
3. For all intents and purposes, we"ve achieved our goal. (基本上,我們已經達到了目標。)
4. At a time when we need to work together, we must avoid being at each other"s throats. (在我們需要團結一致的時候,我們必須避免互相攻擊。)
5. Behind the scenes, the team is working hard to prepare for the big game. (在幕后,團隊正在努力為即將到來的比賽做準備。)
6. At will, I can choose which task to work on next. (我可以隨意選擇下一個要處理的任務。)
7. Behind the scenes, the company is quietly making changes to improve its operations. (在幕后,公司正在悄悄地做出改變以改善運營。)
英文小作文:
The Importance of Teamwork
In today"s fast-paced world, teamwork has become essential for success. Whether it"s in business, athletics, or any other field, individuals cannot achieve their goals alone. Instead, they need to work together, share ideas, and rely on each other"s strengths to reach their objectives.
Throughout history, teams have achieved incredible feats by working together. The Wright brothers, for example, were able to create the first successful airplane thanks to their teamwork and dedication. Similarly, the Apollo missions to the moon required a team of highly skilled professionals who worked together to achieve the goal of human space exploration.
However, teamwork is not always easy to maintain. It requires trust, communication, and a shared sense of purpose. When individuals are working together, they must avoid being at each other"s throats and instead focus on achieving the common goal.
In conclusion, teamwork is essential for success and progress. It requires effort, dedication, and commitment from everyone involved. If we can learn to work together and rely on each other"s strengths, we can achieve our goals and make a positive impact on the world around us.
名師輔導
環球網校
建工網校
會計網校
新東方
醫學教育
中小學學歷