| 释义 |
principal parts 释义 动词的主要变化形式 (三角形的)边和内角 例句 1·Learners are principal parts in learning process. 学习者在学习过程中具有主体地位。 2·Having all principal parts , namely, the sepals, petals, stamens, and pistil or pistils. 完整的花的具有全部基本器官的,即:花萼、花瓣、雄蕊和雌蕊。 3·Principal parts of building market are engaged in construction and transaction of building projects. 建筑市场主体是提供和交易公共品的生产经营者。
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