Pentamer
n. [化]五聚物, 五節(jié)聚化物
??? 情景例句
and he doesn't get to use it.
卻又用不上。
Why didn't you do it?
為什么你不做？
What stores do you want me to order, Sir?
先生，您想要我訂購些什么儲(chǔ)存品？