To eliminate the friction of inquiring the person to pay for the cost, sponsored transactions, enabled as a result of fuel stations, let the application pay out the rate alone, never ever needing to reveal its existence to the user. 矿工费（gas）：一定程度上决定了你的交易速度，矿工费给的越多，原则上交易速度相对越快 Sui’s Storage Fund assures details storage is priced properly https://trevorukymb.blogdon.net/a-simple-key-for-ton空投-unveiled-50705431