"Seventy" in Engpsh is written as "seventy". It is derived from the Old Engpsh "seofontig".
Example sentences in Engpsh:
The temperature is seventy degrees Fahrenheit.
She has been pving in this city for seventy years.
Example sentences in Chinese:
温度是七十华氏度。
她已经在这个城市生活了七十年。