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世界
Two independently framed mitre gate leaves posed open against chamber sides; shorter leaves and opposed heel pivots differ from single upper gate.
这个模型不需要署名。这一行写明了它的来源。
"Lower Mitre Gate Pair (Canal Boats and Lock Operations)", from 3DAssets.dev (https://3dassets.dev/assets/canal-boats-and-lock-operations-canal-boats-and-lock-o-0423c01b), CC0 1.0
告诉运营地球在线 3D 的人哪里不对：这不是上传者有权分享的内容、许可写错了、文件损坏或有害，或者内容令人反感。
