The two most people encounter are leap year and daylight savings time.
人们最常遇到的两种情况是闰年和夏令时。
为什么要有闰年？
原来1900不是闰年。
This year, the world’s timekeepers will add its 24th leap second since 1972.
今年，全世界的计时员将自1972年以来第二十四次增加闰秒。
Production could reach 4,000 a year, a big leap in volume for a racing-car manufacturer.
每年将生产4000辆。对于一个赛车制造商来说，这是个大数量。
Each leap year we add that day onto the end of February.
每个闰年我们都要在二月底加上一天。
The leap year comes around once in four years.
闰年每四年来一次[每四年有一个闰年]。
Feb. 29 is an intercalary day; leap year is an intercalary year.
2月29日是闰日；闰年是有添加日的年份。
How often is there a leap year?
隔多长时间有一次闰年？
That's how leap year got its name.
那就是闰年名字得来的原因。
If you were born in a leap year, you may not get to celebrate your birthday every year.
如果你是润年出生，你有可能不会每年都庆祝到生日。
Leap year recurs every four years.
每四年闰年一次。
每四年闰年一次。
Leap year recurs every four years, and in that year February have 29days.
闰年每四年一次，在闰年的那一年，二月份只有29天。
The next leap second comes at the end of this year.
下一次的闰秒将出现在今年末。
This time was added as an extra day during each leap year.
在每个闰年里，这些时间就被加总起来成为多出来的一天。
Which year were you born? Is it the leap year?
你出生在哪年，是闰年吗？
This recurring appointment begins on a leap year.
此定期约会开始于闰年。
Our company is poised to leap into a new market next year.
明年我们公司打算进入新的市场。
Determines whether a specified month in a specified year and era is a leap month.
确定指定纪元年份中的指定月份是否为闰月。
This year, the world's timekeepers will add its 24th leap second since 1972.
今年，全世界的计时员将自1972年以来第二十四次增加闰秒。
A New Year is a time to leap old barriers and make real breakthroughs!
新的一年是重新启程的又一次机会！
This recurring appointment begins on a leap year.
您的定期约会开始日期是闰月日期。
Calculates the leap month for a specified year, or year and era.
计算指定年份或指定纪元年份的闰月。
The extra day in February because of the leap year also helped, specialists said.
专家表示，因今年是闰年，2月比往年多了1天，这也是有利因素之一。
Determines whether the specified year is a leap year.
确定指定的年份是否为闰年。
Calculates the leap month for a specified year.
计算指定纪元年份的闰月。
Calculates the leap month for a specified year and era.
计算指定年份和纪元的闰月。
And twenty-nine on each Leap Year.
每个闰年二月有二十九天。
And twenty-nine on each Leap Year.
每个闰年二月有二十九天。
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