形容词
中文翻译：恒定的
同义词：
['steady', 'unchanging']
例句：
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1.The temperature is constant throughout the day.
温度在整个一天中保持不变。
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2. The team's performance was constant throughout the game.
球队的表现在整个比赛中始终保持稳定。
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3. The river flows steadily through the valley.
这条河流平稳地流过山谷。