Cobalt crust
[化] 钴华; 八水合砷酸钴
🧩 词语组成解析
n. 钴, 钴类颜料\\n[化] 钴Co
crust
[krʌst]
n. 面包皮;外壳;硬外皮;地壳;
vt. 用外皮覆盖;在…上结硬皮;生痂儿;
vi. 结成外壳;结硬皮;
🗣️ 情景例句
Yes. I wonder if you can send up some of boiling water for me.
是的，你可以送点开水上来吗？
How much does that typewriter weigh?
那台打字机重多少？
Do you have a calling card?
您有名片吗？