I started boxing at like age 29.

我大概29岁开始打拳击。

So she started this neighborhood puzzle swap box and posted about it on Facebook.

所以她开始了这个邻里拼图交换箱，并在 Facebook 上发布了这个消息。

Finally, we calculated whether a box on a ramp would start sliding down.

最后，我们计算它是否是一个盒子 在斜坡上它会开始滑动。