Coltan
钶钽铁矿
🗣️ 情景例句
Harvey, how are you?
你好吗，Harvey？
Better an empty purse than an empty head.
宁可钱袋瘪，不要脑袋空。
Let me see. Did you wash it in hot water?
让我看看。您是用热水洗的吗？