Polyisoprenes
(polyisoprene 的復數) n.[化]聚異戊二烯
??? 情景例句
I know that.
我知道。
The school awarded Merry a prize for her good work).
學校因為她工作好而獎勵了梅麗。
and that is one of the things the young are busily engaged in seeking.
這正是年輕人所熱衷追求的。