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The train is going slowly uphills. the train is going quickly downhills.
火车正在缓慢的上坡。火车正在快速下坡。
《Peppa Pig》《小猪佩奇（精选版）》
双语例句
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Don't rush or run uphills. and downhills.
不耍奔跑上山或下山。
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The downhills are already maxed out by the laws of physics and safety.
下山路由于物理原理和安全的考虑，已经是最快成绩了。
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The downhills are already maxed out by the laws of physics and safety .
下山路由于物理原理和安全的考虑，已经是最快成绩了。
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Through the uphills and downhills of my life, I've come to realise that I didn't really ever own my own life. And neither did most of the others.
在生活的坎坷中，我慢慢看清了，原来曾经的我并没有拥有自己的生活，就和很多人一样。