time keeping instrument的用法和樣例：
例句
- These mixtures of astronomical instruments and time-measuring devices cannot be seen as independent time measurers.
這類計時器尚不能算是獨立的計時器，還是天文儀器與計時儀器的混合體。 - The steelyard clepsydra, a special type of clepsydra, had been the chief timekeeping instrument during the Sui-Tang period and the earlier stage of the Northern Song dynasty.
摘要秤漏是一種特殊類型的漏刻，在隋唐及北宋前期曾是司天機構的主要計時儀器。
