Tempering sand
[机] 调质砂
🧩 词语组成解析
[医] 回火, 淬硬
sand
[sænd]
n. 沙;沙滩;沙色;
vt. 撒沙于;用砂纸磨光;
🗣️ 情景例句
Oh, she has an opening tomorrow at ten.
哦，她明天上午10点有空。
I've lost my nerve.
我失去了勇气。
He himself has done it lots of times!
他自己就已戒了很多次了！