date line 是什么意思

an imaginary line on the surface of the earth following (approximately) the 180th meridian
同义词：dateline, International Date Line,

	1.	If we cross the date line from the east to the west we have to omit one day . 如果越过日界线从东向西走，必需跳过一天不算。
	2.	When he crosses the date line he subtract a day from his calendar in order to compensate . 当他越过日界线时，要从他的日历上减去一天，才能得到补偿。
	3.	What is the purpose of the international date line 国际日期变更线是用来做什么的？
	4.	The international date line goes north - south across the pacific ocean 国际日期变更线由南向北横跨太平洋。
	5.	Across the international date line ：飞越国际换日线
	6.	Current date line 当前日期线
	7.	This evening re - cross the international date line and arrive back in the usa on the same day 欢迎参加深圳一日澳门一日等深度旅游活动，费用另计。
	8.	Re - cross the international date line and arrive back in the usa . for more information or making trip arrangement 欲知更多详情，或需要我们代为安排旅程，请洽询
	9.	Board air china airline to fly transpacific beijing bound . cross the international date line 今日乘中国国际航空飞往中国首都北京，开始中国精华游，机上提供饮食。
	10.	New zealand is just west of the international date line , so it is the first country to get the new day 新西兰位于国际日期变更线以西，所以它是世界上第一个迎接新一天到来的国家。

date line是什么意思