名词
中文翻译：上升的侧面
同义词：
['upside', 'upward facet', 'upside down']
例句：
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1.The elevator has an upward side that is difficult to reach.
电梯有一个难以到达的向上侧面。
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2. The mountain had a steep upward side that made climbing difficult.
这座山有一个陡峭的向上侧面，使得攀登变得困难。
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3. The car was parked with its upward side facing the sun.
汽车被停放着，它的向上侧面朝向太阳。