Polyadenylic acid
多（聚）腺苷酸
🧩 词语组成解析
🗣️ 情景例句
All right. Please hold two orchestra seats for us.
好，请帮我们保留两张前排的座位。
Don't drop that bottle on the floor.
别让那只瓶子掉到地上。
It's ours.
是我们的。