Core sand
[机] 心砂
🧩 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）;
sand
[sænd]
n. 沙;沙滩;沙色;
vt. 撒沙于;用砂纸磨光;
🗣️ 情景例句
Please excuse me for a minute.
失陪一会儿。
Would you open the door for me, please?
你能替我开门吗？
The policemen could not cope with the crowds.
警察无法对付群众。