Plaster core
[医] 石膏核
🧩 词语组成解析
core
[kɔ:]
n. 中心，核心，精髓;果心，果核;[地质学]地核;[计] 磁心;
vt. 去（果）核，挖去…的果心;提取岩芯（样品）;
🗣️ 情景例句
I'd like to buy some stamps for this letter.
我想买这封信的邮票。
When's class gonna end?
怎么还不下课？
Mary is still writing letters. She's been writing letters all day.
马力还在写信，她写了一整天的信。