Cobaltinitrite
亚硝酸根合高钴酸盐
🗣️ 情景例句
Things are looking up.
情况在好转。
If this shirt doesn't fit,may I bring it back later?
如果这件衬衫不适合，我以后可以带回来换吗？
Before? After? said the doctor.
“饭前？饭后？”医生说。