principals
[p'rɪnsəplz]
n.
负责人( principal的名词复数 );
[法律]本人;
主要的人（或物）;
例句:
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The elders are convened, the principals are here.
来自VOA
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I must consult my principals.
我得同委托人商量一下.
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The subsequent rapport between the two principals assisted the transition process.
这两位首脑在这次会谈后所建立的和谐关系帮助了交接工作的进行.
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Not surprisingly, the members echoed the views of their principals.
毫不奇怪, 小组成员都是根据他们自己的上司的意见照本宣科.
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In some cases, principals will be removed.
来自WSJ
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So I reach out to the science teachers and principals.
来自SA