（指车辆发动机）以极低的速度运转：指车辆发动机以非常低的速度运转。
稳定但缓慢地运行或进行：指以稳定但缓慢的方式运行或进行。
tick over //
动词 (of an engine) to run at low speed with the throttle control closed and the transmission disengaged (发动机)怠速转动; 空转 (See also idle)
名词 the speed of an engine when it is ticking over 空转速度
名词 (as modifier) 空转的
tick-over speed
run disconnected or idle
同义词： idle
... tick off 打上记号勾掉 tick over 慢转；空转；（事业等）进展缓慢；（生活等）勉强过得去；平平淡淡 go against the tide 逆潮流；不随大流 ...
... tick off 打上记号勾掉 tick over 慢转；空转；（事业等）进展缓慢；（生活等）勉强过得去；平平淡淡 go against the tide 逆潮流；不随大流 ...
... tick off 打上记号勾掉 tick over 慢转；空转；（事业等）进展缓慢；（生活等）勉强过得去；平平淡淡 go against the tide 逆潮流；不随大流 ...
Buses and taxis tick over rather noisily.
公共汽车和出租车空档慢转时噪音很大。
Busess and taxis tick over rather noisily.
公共汽车和出租车空档慢转时噪音很大。
My eyes slid back to the clock and watched it tick over the final seconds.
我重新瞄了一眼时钟，看着它滴滴答答地走过最后几秒。
Bureaucratic systems and processes were put in place to make the system tick over like a boring clockwork machine.
They might have set-up costs, both in time and money, but once they are rolling they can just tick over in the background.
FORBES: The Business of Writing: Turn Your Income Stream Into A River
It was maybe because of Berne - where clocks continue to tick over centuries - that the Theory of Relativity, a concept that time is not constant, could have been born.