Tetranucleotide
四核苷酸
🗣️ 情景例句
What a lovely tradition!
多么可爱的传统
Laugh at your ills, And save doctors' bills.
生病不忧虑，节省医药费。
Eric had been the eldest son of the family, very much older than his two brothers.
埃里克是这家长子。