"门内"是个多义词，它可以指门内（汉语词语）,门内（HotCha演唱歌曲）。
讨论限于在本部门内非正式地进行。
Discussions are held on an informal basis within the department.
火车车门内侧有把手。把手很紧，这样就不会被意外打开了。
Train doors have handles on the inside. They are stiff so that they cannot be opened accidentally.
通过在每个部门内部改善装载卡车的后勤工作和运输包装，可以获得一些成本的节约。
Some cost savings can be achieved by improving the logistics of loading trucks and shipping packaging within each department.
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