She knows she is getting old when the candles cost more than the cake.

买蜡烛花的钱要比买蛋糕都多时，她就知道自己有多老了。

youdao

You know you're getting old when you walk up the stairs and call it excercise.

如果爬楼梯时你美其名曰为锻炼，那说明你是真得老了。（我爷爷总是笑称爬楼梯就是锻炼）

youdao

Though I am getting old, when I think about my career, I will recall the scenes of making sketches as a boy.

哪怕是现在一把年纪了，在回忆绘画生涯时，还会回忆起许多少年时期写生的场景。

youdao

He succeeded in getting one published when he was only eighteen years old.

VOA: special.2009.02.08

"Wow, you really know you're getting old, " Larry said, when the kid turned back.

WSJ: Larry King: Back in Brooklyn��Jason Gay

Smell the cheese often so you know when it is getting old.

FORBES: Change Happens. Embrace It. Enjoy It. Look Forward To It.

Thompson writes, I was getting a little too old to make powerful enemies when I had no cards at all, and I had lost some of my old zeal that had led me, in the past, to do what I damn well felt like doing, with the certain knowledge that I could always flee the consequences.

FORBES: Go See Johnny Depp In The Rum Diary - But Read The Book First