30用英语怎么说怎么写 13用英语怎么说

1、30用英语怎么说

In English, we say “Thirty” to refer to the number 30.

Thirty is a special number as it is made up of two different digits, 3 and 0. It is also the sum of the first four odd numbers: 1 + 3 + 5 + 7 = 16, and the sum of the first three all-natural numbers raised to the power of two: 1^2 + 2^2 + 3^2 = 14.

Furthermore, thirty is significant because it marks the end of the third decade in a person’s life. It is a time when individuals begin to experience more profound changes in their lives, such as settling down into a career, starting a family, or experiencing physical changes associated with aging.

In sports, thirty is significant because it is the jersey number worn by many prominent athletes, such as basketball player Stephen Curry and football quarterback Alshon Jeffery.

In literature, thirty is also a significant number. It appears in the New Testament of the Bible, where Jesus Christ begins his ministry at the age of thirty. It also appears in the famous novel, “Alice’s Adventures in Wonderland,” where the Mad Hatter’s famous riddle goes, “Why is a raven like a writing desk?” The answer to the riddle is “Because Poe wrote on both” with “Poe” being a reference to the famous writer Edgar Allan Poe, who died at the age of thirty.

To sum it up, thirty is a unique and significant number in many different aspects of our lives. Whether it’s in sports, literature, and even our personal lives, the number thirty holds a special meaning.

2、30用英语怎么说怎么写

“30”在英语中通常是用数字“30”来表达。在写作、口语、数学、时间以及其他领域中，数字“30”都有着广泛的应用。下面我们来看一下“30”在不同场景下的用法。

1. 时间：在24小时制中，“30”可以表示早上10点钟（10:30）；在12小时制中，“30”可以表示下午1点半（1:30 pm）。

2. 年龄：当我们讲述一个人的年龄时，可以用“30 years old”表示那个人已经30岁了。

3. 日期：在写日期时，“30”可以表示每个月的30号，例如“October 30th”表示10月30日。

4. 打电话：当你需要拨打国际电话时，需要输入国际区号，美国的区号是“+1”，后面接“30”表示所拨打的电话号码以“30”开头。

5. 数学：在数学中，“30”是一个非常常见的数字，它是3和10的乘积，也是2、3、5的最小公倍数。

6. 体育比赛：在一些球类比赛中，比赛时间长度通常为“30分钟”或“30秒钟”用于计时。

7. 工作日：在公司日历上，“30”通常表示一个月中的最后一天，也是最后一个工作日，例如“June 30th”通常是公司财年的最后一天。

“30”在英语中有着广泛的应用，它不仅是一个数字，同时也是人们生活中不可或缺的一部分。通过了解“30”的不同用法，我们可以更好地运用这个数字，方便我们的日常生活和工作。