"seventy" in Chinese (Simplified)
七十
Definition
数字70。可以指数量、年龄、十年（七十年代）或温度/速度的度量。
Usage Notes (Chinese (Simplified))
用于'the seventies'（七十年代或70-79岁年龄段）等表达。Seventy通常是退休或老年优惠的基准年龄。
Examples
My grandfather is seventy years old.
我祖父**七十**岁了。
There are about seventy students in the lecture hall.
讲堂里大约有**七十**个学生。
The speed limit on the highway is seventy miles per hour.
高速公路的限速是每小时**七十**英里。
She just turned seventy and honestly she has more energy than I do.
她刚满**七十**，说实话她比我精力还旺盛。
We've been getting highs in the low seventies this week — perfect weather for hiking.
这周最高气温在**七十**华氏度出头——非常适合徒步。
The company has been around for over seventy years — they clearly know what they're doing.
这家公司已经存在了**七十**多年——他们显然知道自己在做什么。