great sigmoid cavity
基本释义
乙字形窝【即半月切痕】
实用场景例句
学术讨论
Historical analysis of the invader's conquest reveals their strategic tactics.
对入侵者征服的历史分析揭示了他们的战略战术。
日常对话
The invader had entered the territory without permission, causing alarm.
入侵者未经许可进入了该地区，引起了恐慌。
校园生活
The invader who disrupted the peace of the campus was swiftly expelled.
破坏校园安宁的入侵者被迅速开除。
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