Ooporphyrin
蛋壳色素, 蛋壳卟啉
🗣️ 情景例句
Good afternoon. What's the trouble?
下午好。有什么不舒服吗？
Cheerfulness and goodwill make labour light.
欢快与好意，劳动不觉累。
I expect to be there this evening.
我打算今天晚上到那儿去。