准确的时间记录对追踪运动员的训练进度至关重要。

Accurate ___time-keeping is essential for tracking athletes' training progress.

良好的守时习惯对按时完成项目很重要。

Good ___time-keeping is important for finishing projects on schedule.

博物馆展出了各种古代计时装置。

The museum displays various ancient ___time-keeping devices.