Its principal constituent is anthocyanin.
其主要成份为花青素。
Need and motive is the principal constituent of a person's initiative.
人的积极的心理构成主要是需要和动机。
The effect of constituent variations is the principal problem for nuclear analysis.
成分的影响是核分析的主要问题。
The effect of constituent variations is the principal problem for nuclear analysis.
成分的影响是核分析的主要问题。
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