我父母在七十年代相识。

My parents met in the ___seventies.

我的父母在七十年代相遇并结婚。

My parents met and got married in the ___seventies.

我奶奶七十多岁了，但她依然喜欢跳舞。

My grandmother is in her ___seventies, but she still loves to dance.

今天的气温会保持在70华氏度左右，非常适合户外活动。

The temperature will stay in the ___seventies today, perfect for outdoor activities.