Polyborane
聚硼烷
🗣️ 情景例句
Keith and I are through.
基思和我已经不再来往了。
If Grade A is not available, Grade B will do.
如果一等品无货，二等品也可以。
Nigel is our new next-door neighbour.He's a pilot.
奈杰尔是我们新搬来的隔壁邻居。他是个飞行员。