You can tell when you are over the top and on the downward slope, by asking yourself a number of questions.
你可以通过问自己一些问题来判断自己什么时候越过了顶峰，什么时候处于下坡。
2
Above them, on a steep slope, a sheep herder sang to his sheep. Nearby, a bent-over young girl picked moroho shoots – wild green vegetables.
抬头望去，陡峭的斜坡上，一个牧羊人对着羊群歌唱，附近一位年轻姑娘正弯腰捡一种当地野生绿色蔬菜。
3
The budget constraint is going to have a different slope to it and preferences will be different over this horizon between consumption then and consumption now.