booster cables, flares, tire pump, and a bag of sand or cat litter (for traction);
汽车急救线、照明灯、轮胎打气泵和一袋子的沙土或者猫砂（增加牵引力）。
给轮胎打气。
Pump the tire up hard before going out on the road.
在出去上路之前， 要把轮胎打足气。
What is the most efficient way to pump your bicycle tire?
给自行车轮胎打气的最有效率的方法是什么？
Called air Maintenance Technology (AMT), the system features a miniaturized air pump that is fully contained within the tire.
新系统被称为空气维修技术amt，系统将一个小型气泵完全内置在轮胎内部。
A tire expands when you pump air into it.
轮胎打了气就会胀大。
Pump the tire up hard before going out on the road.
在出去上路之前，要把轮胎打足气。
Pump the tire up hard before going out on the road.
在出去上路之前，要把轮胎打足气。
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