N,n'-diphenyl-ethylene diamine
[化] N,N'-二苯基亚乙基二胺
🧩 词语组成解析
n. (=biphenyl)[化]联苯, 苯基苯
n. 乙烯\\n[化] 乙烯; 1,2-亚乙基
diamine
[['daiəmi:n]]
[化] 二元胺\\n[医] 二胺; 胼, 联胺
🗣️ 情景例句
Special for new friends.
特地为新朋友准备的。
How long has it been since you've heard from your uncle?
自从你听到叔叔的消息有多长时间了？
and then there are three thousand million other Milky Ways, or galaxies, in the universe.
况且在宇宙中还有30亿个天河，即银河系。