Polyadenylic acid
多（聚）腺苷酸
🧩 词语组成解析
🗣️ 情景例句
My final test is worth half my grade.
我的期末考试结果占我总成绩的一半。
To go to his favorite bar after work
下班后到经常光顾的酒吧去
Last Christmas, the circus owner, Jimmy Gates,
去年圣诞节，马戏团老板吉米。