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。

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Particles placed at the top of either slope would fall down to the bottom under the pull of gravity. Particles placed at the bottom of either slope would go nowhere.

在重力的拉动下，放在任何一个斜面顶部的粒子都会滚到底部，而放在底部的粒子会保持不动。

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The smell of the wildebeest was sour. At the top of the slope, the house was still dark.

羚羊身上的气味酸得刺鼻，上到坡顶后，屋里还是一片漆黑。

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Holding a big conference with your group in the middle of a slope or on the cat track at the top of the slope.

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Skiers, one pair at a time, climb to the top of the slope and await the starter's gong (an 18-inch saw blade suspended from a wooden tripod).

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You might be selling an opinion, or a joke, a political ideology, a favorite television show or even a photo of your kids at the top of a ski slope.

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