时间理论（Theory of Time）(2)

举一个具体例子，一辆汽车(M)从A点出发，最后到达B点。如果M走一条直线，则M从A到B经历的时间是直线的，如图b；如果M走的是一条曲线，则M从A到B经历的时间就是曲线的。多说一句，M从A到B经历的时间等于M从A到B每一点的时间累积。（详看3.6 节）
Now taking a real instance, a car (M) started from point A and arrived at point B. If M went along with a straight line, it was regarded the time of M’s travel from A to B was straight (figure b); If M traveled along with a curved line, it was regarded the time of M’s travel from A to B was curved or non-straight line (figure a). The interval of M’s traveling from A to B equaled to the cumulating times, which M spent by going through every point from A to B. Detailed in section 6 below.
看“图表c，”它描述的是“年”与时间（time）的关系。我们暂且把地球绕太阳公转看成是圆形的。这个周期（客观时间）就是这个圆上的时间“一点一点”组成的，我们可以说这个周期（客观时间）是圆形的。 现在我们把这个周期人为定义为“年，” ( year) 大家知道，“年”也是有变化的，“年”并不是绝对的365天，“年”的平均时间是365.2421天。通常“今年”(this year)与 “去年”(last year)是不相同，这就是我们公历（the Gregorian calendar or solar calendar）有闰年（leap year）的原因。再如，一般情况下，我们知道时钟和手表都有“秒针，”时钟和手表的秒针转一圈，它告诉我们时间过去了一分钟，而对于“秒针”来说它经历的时间也是个圆形的。
From Figure c, it depicts the relationship of “year” and “time.” Here, the orbit of the Earth’s moving around the Sun is tentatively considered round. This period (a kind of objective times) consists of every “point of time” on this circle, so we can call this period is round. Now we change to call this period as “year.” “Year” is not exactly equal to “365 days” or “366 days.” It equals to 365.2421 days on average. “This year” is normally different from “last year,” that is why our calendar（the Gregorian calendar or solar calendar）has leap year. For another example, the watch or clock has “second hand.” The second hand goes a circuit that tells us time passes a minute. For the “second hand”, time it went through could be called “round in shape.”