布朗制造并銷售化油器高的飛行哩數(shù), 高性能的設(shè)備.Brown manufactures and markets the carburetors as high - mileage, high - performance equipment.適當(dāng)?shù)奶嚎梢宰屝旭偭〝?shù)比平常多過百分之三.Proper inflation can improve gas mileage by more than 3 %.你的車在行駛了那么多哩數(shù)之后怎么還會保持...