Ooporphyrin
蛋壳色素, 蛋壳卟啉
🗣️ 情景例句
78 percent of black high-school graduates are unemployed.
百分之四十八的黑人高中毕业生失业。
We finally made it.
我们终于做到了！
I think I'm in a difficult position.
我想我现在的处境困难。