动词短语
中文翻译：上升和下降
同义词：
['rise', 'fall', 'ascend', 'descend例句：1. The stock market is in a state of constant rise and fall.（股市一直处于不断上升和下降的状态。）']
例句：
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1. The stock market is in a state of constant rise and fall.
股市一直处于不断上升和下降的状态。
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2.The temperature rose and fell throughout the day.
温度在一天中起伏不定。
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3. The economy is experiencing a period of rise and fall in growth rates.
经济正处于增长率起伏的时期。