十三常被认为是不吉利的数字。
我们都知道，人们对十三这个数字充满敬畏和恐惧。
Thirteen, as we well know, is regarded with great awe and fear.
在美国，十三被认为是个迷信数字。
A In America, thirteen is considered to be a superstitious number.
你相信十三是个不吉利的数字吗？
十三对玛雅人来说是个重要而神圣的数字，而第十三白克顿周期将在2012年12月21日左右终止。
Thirteen was a significant, sacred number for the Mayas, and the 13th Baktun ends around Dec 21, 2012.
三和十三也是数字。
在美国，十三被认为是个迷信数字。
In America, thirteen is considered to be a superstitious number.
十三常被视为不吉利的数字。
墙上贴着当天的安排，几乎每一分钟都填满了诸如“我要学习常见字”或“我要学习组合和分拆十三到十九之间的数字”这样的目标。
On the wall hung a schedule for the day, with virtually every minute packed with goals like "I will learn sight words" or "I will learn to compose and decompose teen Numbers."
首先，十三这个数字本身就被认为是不祥的。
也不要送十三，这也是在中国不吉利的数字，必须要避免。
Don't send 13, this is also an unlucky number in China, must be avoided.
书写内容是十个阿拉伯数字（0—9）及十三个汉字组成的一句话。
The contents of writing are: Arabic numeral 0-9 and one sentence consisting of thirteen Chinesecharacters.
很多人认为十三是个不吉利的数字。
另取出十三张数字、花色不同普通尺寸的牌，数字面朝上的一句分开的排列在桌面。
They are different colors and numbers and listed face up on the table one by one.
在国外一些国家，有些人不喜欢数字13因为他们不认为13是个幸运数字。例如：他们不喜欢住在十三楼。
In some foreign countries, some people don't like the number 13. They don't think 13 is a lucky number. For example, they don't like to live on the thirteenth floor.
在国外一些国家，有些人不喜欢数字13因为他们不认为13是个幸运数字。例如：他们不喜欢住在十三楼。
In some foreign countries, some people don't like the number 13. They don't think 13 is a lucky number. For example, they don't like to live on the thirteenth floor.
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