Pentamer
n. [化]五聚物, 五节聚化物
🗣️ 情景例句
the autograph of somebody who may be famous someday.
将来有可能成名的人的亲笔签名。
Mr. Smith is still in his fifties.
史密斯先生仍然50几岁。
the bank and its customer owe a large number of obligations to one another.
银行和储户彼此还需承担大量义务。