1. 第七十：第六十 sixties | 第七十 seventies | 第八十 eighties

2. 七十多岁 七十至七十九岁：Sixties 六十多岁 六十至六十九岁 | Seventies 七十多岁 七十至七十九岁 | Eighties 八十多岁 八十至八十九岁

3. 写成了：1.seventies写成了seventieth | 2. at a slower rate听成了 that are rower rate | 3. is linked to写成了is link to

noun

1. the time of life between 70 and 80

Synonym: mid-seventies

2. the decade from 1970 to 1979

Synonym: 1970s