Pentamer
n. [化]五聚物, 五节聚化物
🗣️ 情景例句
Do we have to pre-book tours, or can we get them on site?
我们必须预定行程， 还是到那个地方再说？
What? I'm right, aren't I?
怎样？我没说错吧！
Suddenly, a middle-age lady got on the train and sat opposite Sally.
突然，一个中年妇女上了火车，坐在萨莉的对面。