RT: On the Gravity Stage at 4:00pm on the 18th you will find Marek Olszewski leading a workshop about "Mobile-First = People First" @CeloOrg https://t.co/nfumRRz4R8
RT：在18日下午4:00的重力台上，你会发现马雷克·奥尔舍夫斯基（Marek Olszewski）主持了一个关于“移动优先=以人为本”的研讨会@CeloOrghttps://t.co/nfumRRz4R8