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
Then walk two blocks to the traffic light.
再走两条街到红绿灯处
You'd better see a doctor about that stomachache.
你胃痛最好去看医生。
I'm not sure we have that much on hand.
我没把握现在的量有没有那么多。