Polyi-poly(c)
[化] 聚肌胞苷酸
🗣️ 情景例句
no concert, no stage presentations.
没有音乐会， 没有舞蹈表演。
He has a piece of cake.
他有一块蛋糕。
How long has Jim been at his school?
吉姆到校有多长时间了？