I think this is true:"Unfair benefits to early adopters".
• 简单试着回答一下 -BayFamily- ♂ (482 bytes) () 11/28/2017 postreply 19:59:14
• 赞, 言简意赅. -弱-智- ♂ (0 bytes) () 11/28/2017 postreply 20:16:11