... rude to 粗鲁无礼的 ; 粗鲁 ; 无礼 rude ore原矿 ; 原矿质量 rude times 原始时代 ...
双语例句
1
A key to ore dressing of quartz sands includes rude ores of high or low quality, occurrence and distribution of detrimental impurity such as iron and aluminium in size grades of placer deposits.