Polynonamethylene formal
[化] 聚亚壬基缩甲醛
🧩 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
Just listen to the sound.
听听这些声音。
Finally,I asked him how old he was.
最后,我问他他多大。
Both the police and the workmen were grateful to the student for this piece of advance information.
警察与工人都对那个学生事先通报情况表示感谢。