Cobaltinitrite
亚硝酸根合高钴酸盐
🗣️ 情景例句
His appearance is impressive.
他的外表给人印象深刻。
The agricultural region is centered largely in the north.
那里的农业区大部分集中在北部。
Similarly, our own present primitive chemical rockets, though good enough to orbit men,
同样，我们目前使用的原始化学火箭，虽然可以把人送入轨道，