Pencil core
[机] 增压砂心
🧩 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
This is Alexandra Pappas, and this is my grandson Robbie,
这是Alexandra Pappas ，这是我孙子Robbie
It is my pleasure to introduce the keynote speaker for today.
我很荣幸地介绍今天的主讲人。
German is a more difficult language than English is.
德语比英语难学。