Actinio hematin
[化] 海葵血红蛋白
🧩 词语组成解析
n. 血色素\\n[化] 羟高铁血红素
🗣️ 情景例句
Why not?
为什么不能？
Let bygones be bygones.
既往不昝。
It seems that man was making a real effort to understand the seasons 20,000 years earlier than has been supposed.
看来人类早就致力于探索四季变迁了，比人们想像的要早20，000年。