动词短语
中文翻译：Unknown
同义词：
['falter', 'sway', 'soar', 'plummet']
例句：
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1. The bird fluttered down to the ground as it landed.
鸟在落地时轻轻落下。
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2. The leaves swayed gently in the breeze.
树叶在微风中轻轻摇曳。
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3. The plane soared high above the clouds before it plummeted to the ground.
飞机在云层之上高飞，然后突然坠落到地面。