Any natural obstacle which stops or obstructs passage, defends from foes, prevents access, or produces separation; a separating boundary-line.
| 单词 | θ161467 | 
| 释义 | society > armed hostility > defence > 			[noun]		 > defensive boundary or cordon > natural (1)		 barriera1701 Any natural obstacle which stops or obstructs passage, defends from foes, prevents access, or produces separation; a separating boundary-line. | 
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