Diradical
[医]双自由基, 双游离基
🗣️ 情景例句
Where's the bookstore?
书店在哪？
The agricultural region is centered largely in the north.
那里的农业区大部分集中在北部。
The pictures it sent us were very disappointing because its main mirror was faulty!
它传送给我们的图像很令人失望，因为它的主要镜子有误差。