Polyacenaphthylene
[化] 聚苊
🗣️ 情景例句
That must be Nat.
这一定是Nat。
He alone is poor who does not possess knowledge.
没有知识，才是贫穷。
He say he's just arrived in Scotland. He says he's staying at a Youth Hostel.You know he's a member of the Y.H.A.
他说他刚到苏格兰。他说他住在一家青年招待所。你知道，他是“青招协”的一个成员。