These contradictory versions arise because rulers and clocks—the things that mark time and space—are not the same for different observers.

之所以有这样矛盾的观点，这是因为“标尺”和“时钟”——它们标志着事件所在的时间和空间，它们对于不同的观察者来说是不一样的。

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That ' s called " rigui, " a design in ancient china to mark time, using the movement of the pillar ' s shade under the sunshine.

那个叫「日晷」 ，是中国古代利用太阳投射的影子来测量时间的一种装置。

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A countdown calendar is one way to mark time from the present to an important event in the future.

倒计时日历是标明从现在到未来的重要事件还有多少时间的一种方法。

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Mark Johnson made the songs by recording one part of the song at a time.

VOA: special.2009.07.31

One way to mark time is to imagine it carries a clock as it moves, and put markers every second.

标记时间的一种方法是,想像它带着时钟运动,并且每秒做一次标记

耶鲁公开课 - 基础物理课程节选

I am on the internet, probably every time I mark,

我上网的时候，几乎每次都会标记清楚，

对于抄袭的想法 - SpeakingMax英语口语达人

If so, it seems likely that ADSK shares will mark time during this period.

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Moreover, while the Federal Reserve has stopped cutting its key interest rate target for the time being, the central bank does not show any signs of raising rates above the 2% mark any time soon--a good indication of the dollar's relative weakness.

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India, which will breach the billion mark some time early next century, ranks even less.

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