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
Well,
好啦，
He knows much who knows how to hold his tongue.
懂得缄默的是明白人。
who put his questions to nature instead of to the ancients,
他向自然界而不是向古人提出问题，