iPhoneXS MAX/11Pro iPhoneX/XS/11ProMax iPhoneXR/11 iPhone8/7/6s/6 Plus iPhone8/7/6s/6 iPhone5s/5c/5 iPhone4s/4
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URL：https://cdn.britannica.com/92/141192-050-457CE79F/Pistons-cylinders-automobile-engine-piston-cylinder-gasoline.jpg 掲載元：https://www.britannica.com/summary/gasoline-engine
