Stock core
[机] 备用砂心条
🧩 词语组成解析
stock
[stɔk]
n. 股份，股票;库存;树干;家畜;
adj. 常备的，存货的;陈旧的;
vt. 提供货物;备有;
vi. 出新芽;囤积;
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
At today's exercise class...
今天上健身课的时候……
He is in difficulty in his business.
他在事业上遇到困难了。
The men were now obliged to try once more.
工人们只得再来一次。