Periodic copolymer
[化] 周期共聚物; 交替共聚物
?? 詞語組成解析
periodic
[,p?r?'ɑd?k]
adj. 周期的;定期的;回歸的;間歇的，時而發生的;
copolymer
[[k?u'p?lim?]]
n. 共聚物\\n[化] 共聚物; 二元共聚物
??? 情景例句
I'm almost ready here.
我快要準備就緒了。
Nothing is impossible to a willing heart.
心之所愿，無事不成。
Ice is only as safe as the water from which it is made,
冰塊只有當制造冰塊的水安全時才是保險的，