1
the number 2
The number 2 is my favorite.
数字2是我的最爱。
二；2
先理解核心含义，再看它在真实句子里的用法。
二；2
the cardinal number 2; the digit 2
The number 2 is my favorite.
数字2是我的最爱。
在魔方比赛中因某些违规行为而被罚的两秒加时。
A penalty for some types of infractions in cubing competitions, which results in two seconds added to one's solve time.
一加一的基数或表示该数字的符号
the cardinal number that is the sum of one and one or a numeral representing this number
I have 2 apples in my bag.
我的包里有两个苹果。
She bought 2 tickets for the concert.
她买了两张音乐会的票。
There are 2 cats sitting on the fence.
有两只猫坐在篱笆上。
The number 2 is my favorite.
数字2是我的最爱。
2 is an even number.
2是一个偶数。
数字2常直接修饰复数名词。
I have 2 apples.
我有2个苹果。
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Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
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作为名词时，指数字2，可数。常用搭配有 'the number 2' 或 'a 2'。
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.