| 短语 | pen sb / sth ↔ up / in |
| 释义 | pen sb / sth ↔ up / in 1. to shut an animal in a small enclosed area把〔动物〕关入围栏中2. be penned up / in to be restricted or forced to remain in a small place被约束，被束缚:•Norma felt restless and penned in.诺尔玛犹如笼中困兽，焦躁不安。 |
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