noun 下载 🔗分享 商人,交易员。 One who earns a living by trading goods or securities. Examples : "The trader bought many used textbooks at the flea market and sold them online for a profit. " 这个交易员在跳蚤市场买了很多二手教科书,然后在网上卖掉赚取利润。 business job person economy commerce finance 与AI对话词汇游戏阅读练习