clockwork

详细解释:n. 钟表装置, 发条装置
【电】 时钟开关
相关词组:
with clockwork precision
like clockwork

英语解释：

名词 clockwork:

any mechanism of geared wheels that is driven by a coiled spring; resembles the works of a mechanical clock

例句：

The landlady was sent out for a two-hour walk with the dog, no matter what the weather; whereupon the niece and the respectable looking middle-aged man promptly went upstairs. He was as regular as clockwork.无论天气如何，房东太太要带狗出去散步两个小时，这时那侄女便和一个看上去很体面的中年男人上了楼。那人每天也真够准时的。