Pentamer
n. [化]五聚物, 五节聚化物
🗣️ 情景例句
I generally go to bed at ten.
我通常十点钟睡觉。
Excuse me I couldn't tell you beforehand.
对不起我不能事先告诉你。
In a few years the small workshop had become a large factory which employed seven hundred and twenty-eight people.
几年之后，小铺子已经发展成了一个雇有728人的大工厂。