Unit sand
[机] 单元砂, 整体砂
🧩 词语组成解析
unit
['ju:nit]
n. 单位，单元;装置;个体;[数]单位数;
sand
[sænd]
n. 沙;沙滩;沙色;
vt. 撒沙于;用砂纸磨光;
🗣️ 情景例句
He missed a phone call.
他没接到一通电话。
Really? I was introduced to her just last weekend.
真的？上周末我才被介绍给她。
I cannot express how glad I am to hear from him.
我无法表达我接到他的信时有多高兴。