The Cooperative Extension Service at Oklahoma State University says buying high-quality seeds can help.

VOA: special.2009.03.03

I hope you know what I mean; a brokerage service is a place where stockbrokers work and a stockbroker is somebody that manages your buying and selling of shares.

但愿你们听得懂,经纪服务业务就是股票经纪人从事的工作,股票经纪人,管理着股票的买入和卖出

耶鲁公开课 - 金融市场课程节选