Alundum powder
[機] 鋼鋁石粉, 金剛砂
?? 詞語組成解析
n. 人造剛玉的商標
powder
['pa?d?]
n. 粉，粉末;粉狀物質;
vt. 在…搽粉;
vi. 涂粉，變成粉末;
??? 情景例句
Well, I ...
好啦， 我……
Live and learn.
活到老，學到老。
and it seemed as though everything she possessed had been tossed out and turned over and over.
看來她的每一件東西都被翻了出來，并且被里里外外看了遍。