1·Today, highly accurate timekeeping instruments set the beat for most electronic devices.
今天，高度精确的计时仪器为大多数电子设备设定了节拍。
2·Big Ben's timekeeping is strictly regulated by a stack of coins placed on the huge pendulum.
大本钟的计时是由放置在巨型钟摆上的一堆硬币严格调节的。
3·One of the challenges that faced ancient civilizations like Egypt was timekeeping, calendars.
像埃及这样的古代文明面临的挑战之一是计时，也就是日历。
4·The accuracy of scientific observations and calculations is always at the mercy of the scientist's timekeeping methods.
科学观测和计算的准确性，总是受制于科学家的计时方法。
5·These clocks became the standard for global timekeeping.
这些原子钟是全球计时的标准。