reference

reference.com

待确认教育与研究

reference is a service for A Farewell to Ask.com | 30 Years of Curiosity. It highlights It also features "To the millions who asked...", We are deeply grateful to the brilliant engineers, designers, and teams who built and supported Ask over the decades. And to you—the millions of users who turned to us for answers in a rapidly changing world—thank you for your endless curiosity, your loyalty, and your trust..