| 词汇 | pen someone in/up | 
| 释义 | pen someone in/up  phrasal verb with pen verb [ T ]  formal uk/pen/ us/pen/ -nn-  把…圈起来;把…关起来 to keep people or animals in a small area  The sheep were penned in behind the barn. 羊群被圈在谷仓后面。   The soldiers were penned up in their barracks. 士兵们被关在兵营里。  | 
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