Open the Steam Mobile app. Tap on Wallet, then Redeem a Steam Gift Card or Wallet Code. Enter your game key, and confirm. Like any of the other methods, this will associate the game with your Steam account. Maybe the next time Valve overhauls the mobile app, they can make it more...
The cloud is not smoke or steam. It is made of millions of microscopic robots called nanorobots( 纳米机器人 ). These tiny robots move from cell( 细胞 ) to cell in the patient's body, destroying the cancer. Fighting cancer with nanorobots is only an idea today, but scientists say that ...