Aluminas
(alumina 的复数) n. 矾土\\n[化] 矾土; 氧化铝
🗣️ 情景例句
I'll help too, Mr. Baker.
我也要帮忙，Baker先生。
I've got a pain in my back.
我的后背有点疼痛。
Modern industry is based on the conception of the maximum production at lowest cost,
以最低成本获取最多产品，