动词
中文翻译：弯曲
同义词：
['undulate', 'wave', 'bend', 'curve例句：1. The waves undulated gently on the beach.（海浪在海滩上轻轻起伏。）2. The river undulated through the valley.（河流在山谷中蜿蜒流淌。）']
例句：
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1. The waves undulated gently on the beach.
海浪在海滩上轻轻起伏。
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2. The river undulated through the valley.
河流在山谷中蜿蜒流淌。
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3.The landscape undulated with the changing of the seasons.
随着季节的变化，景观呈现出起伏的形态。