in one's seventies and eighties
老八十───Old 80;七───seven
An 80-year-old man was attacked by a 200-pound kangaroo.───一个80岁的老人被一只200磅重的袋鼠袭击了。
Like my old TRS-80, which sits lifeless in a dusty box, computing history can easily slip away.───就像我的旧的TRS - 80一样(毫无生气地放在布满尘土的盒子中)，计算历史很容易不知不觉地过去。
Some of us make it to the ripe old age of 80, 90, 100 or more.───我们有些人活到八十、九十、一百岁甚至更老。
See how much I remember for being an 80-year-old codger?───看出我这个80岁的怪老头能记住多少事了吧？
The80-year-old said he did not like seeing his wife exercising and dancing with friends in the community yard.───80岁的老人说他不喜欢看到他的妻子和码跳舞行使社会与朋友在。
It's an old 1980s tune, but whenever I have parties at my house, or my friends come over to get ready to go out, we play it full blast.───这是一首上世纪80年代的老歌，但是，只要我在家举行party，或者是朋友过来准备一起外出时，我们就用最大的音量播放这首歌。