2019年科技盛會：Google IO、FaceBook F8、Apple WWDC

2019年科技盛會：Google IO、FaceBook F8、Apple WWDC

Google I/O
https://www.youtube.com/watch?v=wm2v6IpKXI4

FaceBook F8
https://www.youtube.com/watch?v=DQAZF50P_-w

Apple WWDC (2019/06/03-06/07，先放2018的)
https://www.youtube.com/watch?v=UThGcWBIMpU