形容词
中文翻译：持续的
同义词：
['unchanging', 'everlasting', 'perpetual例句：1. The weather isconstant throughout the year.（天气全年都保持不变。）']
例句：
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1. The weather isconstant throughout the year.
天气全年都保持不变。
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2.The river flows constantly through the valley.
这条河不断地流过山谷。
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3. The sunshines constantly throughout the day.
太阳整日不停地照耀。