Sand expansion
[机] 铸砂膨胀
🧩 词语组成解析
sand
[sænd]
n. 沙;沙滩;沙色;
vt. 撒沙于;用砂纸磨光;
🗣️ 情景例句
He is making good progress after his operation.
他动过手术后病情大为好转。
You'll fall, if you don't take care.
你不专心的话，就会跌倒。
Invariably the background was the same: dirt and poverty, and very uncomfortable.
肮脏、贫穷，极其不舒适。