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
Smoking is bad for your health.
吸烟对你的健康有害。
You shouldn't refuse the children's request.
拒绝孩子们的恳求是件不好的事。
I've never been there.Have you ever been there, Ken?
我从未去过。肯，你去过吗？