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
You know what?
知道吗？
This pencil is longer than that one.
这支铅笔比那一个长。
You must keep it a secret. You mustn't tell anybody else.
你必须保密，谁都不能讲。