单词：measure of time
measure of time的用法和样例：
例句
- The most precise measurements of time are nowadays based on atomic phenomena.现在最精确的时间测量是依据原子现象。
- And what refinements did the Egyptians make to time measurement to give us the system we still use today?埃圾人在时间测量方面做了哪些改，才留给了我们至今仍在使用的方法。
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