•sixty, seventy, eighty60， 70， 80

•This house was built seventy years ago.这栋房子建于70年前。

•She's getting on for seventy.她将近七十岁了。

---

•He's very active considering he's in his seventies.鉴于他都70多岁了，他已经算是非常有活力的了。

•The temperature is expected to reach the seventies tomorrow.明天的温度预计会达到华氏70多度。

•Flared trousers and platform shoes were fashionable in the seventies (= between 1970 and 1979).喇叭裤和厚底鞋在20世纪70年代风行一时。