1、OMEGA, one of its luxury brands, has been the official time keeper of Olympics for 23 times.
其旗下的歐米茄（OMEGA）23次成為奧運官方指定計時器。

2、The time keeper rings a bell to indicate the beginning and end of rounds.
計時員打鈴表示第一局比賽的開始和結束。

3、Of course. You are the time keeper here.
當然，時間您說了算。

time keeper翻譯