名词
中文翻译：摆动指示器
同义词：
['swing indicator', 'swinging indicator']
例句：
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1.The swing indicator on the clock is indicating that it's time to take a break.
时钟上的摆动指示器表明是休息的时候了。
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2. The swing indicator in the park shows that there are many people playing on the swings.
公园里的摇摆指示器显示有很多人在荡秋千。
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3. The swing indicator was used to indicate the direction of the wind.
摇摆指示器被用来指示风的方向。