Polymethylation
[化] 聚甲基化; 聚甲基化作用
🗣️ 情景例句
you need to work at it, Grandpa.
你得常练它， 爷爷。
He lived in California until he was seventeen.
他生活在加利福尼亚直到他十七岁。
What's it used for?
有什么用途？