As in the tachometer in your car, it moves very fast.

就像你车里的转速表一样，它移动地非常快。

This van also has a tachometer to that tells me how fast the engine is turning.

这辆面包车还有一个转速表， 可以告诉我发动机转动的速度。

Features common on other 21st-century motorbikes, like tachometers or temperature gauges—to say nothing of computer-assisted ride modes for different conditions—are absent.

其他 21 世纪摩托车上常见的功能（例如转速表或温度计）均不存在，更不用说针对不同条件的计算机辅助骑行模式了。