1. If the knocking persists after one or two fill-ups, your car may need a tune-up or some other repair. 如果把一个或两个可以飙后依然会起作用，你的车可能需要调整点火或其他一些修理。
2. Many gas stations will charge you a slightly lower rate if you pay cash instead of credit, which could add up over multiple fill-ups. 如果你付现金的话，许多加油站收的钱会稍稍比你用银行卡结算要低一些，长期积累下来也能省出不少。
3. Dozens of start-ups unveil their lovingly built sites each day, but most people already have their fill of social network profiles to update and friend requests to weigh. 每天都有数十家网站初创公司在网上发布他们可爱的网站，但是大多数人们已经有了自己的社交网络图谱，并有一定的朋友圈子。
4. FuelFrog is a helpful Twitter application that lets you log mileage between fill ups, how much gas cost, and how many gallons or liters you added to your tank. FuelFrog是一个有用的Twitter应用，可以让你记录二次加油之间的里程，汽油消耗是多少，以及你需要多少加仑或升的汽油添加到你的油箱。
