This is the 8567th most frequent Chinese word.
three
The Chinese word "three" is "三" (sān), meaning the number 3.
In this sentence, '三' quantifies the number of books, specifying there are three of them.
我有三本书。
I have three books.
Here, '三' describes the exact count of attempts made by the person in the sentence.
她三次尝试都失败了。
She failed all three attempts.
In this case, '三' indicates a duration of time, specifying three days.