Ooporphyrin
蛋壳色素, 蛋壳卟啉
🗣️ 情景例句
My professor will grade this exam on a curve.
我的教授用曲线系统打分。
Where do you go to school?
你在哪里上学？
they would devour all our crops and kill our flocks and herds, if it were not for the protection we get from insect-eating animals.
昆虫会吞食我们的全部庄稼，杀死我们的成群的牛羊。