精神卫生是健康不可或缺的重要组成部分。
Mental health is an integral and essential component of health.
因为中国文化是人类不可或缺的重要组成部分。
Because the culture of China is a indispensable part of the human.
汉语四字成语是汉英词典中不可或缺的重要组成部分。
Chinese four-character idioms are a special yet important component of a Chinese-English dictionary.
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