Polypentamethylene formal
[化] 聚亚戊基缩甲醛; 聚戊二醇缩甲醛
🧩 词语组成解析
formal
['fɔ:məl]
adj. （学校教育或培训）正规的;方式上的;礼仪上的;
n. <美>须穿礼服的社交集会;<口>夜礼服;
🗣️ 情景例句
maybe you should think about becoming a writer.
也许你应考虑成为一名作家。
Please try to focus your attention on the speaker.
请试着把注意力集中于演讲的人。
In her letter, she said that she would come to England next year.
在信中她说她明年将到英国来。