limestone cave
短语词组
- limestone solution cave 灰巖溶洞
- limestone cave disposal 溶洞処理
- limestone cave and funnel 溶洞與漏鬭
- limestone cave leak 溶洞滲漏
- hidden limestone cave 隱伏巖溶
- Especially big limestone cave 特大溶洞
- treatment of special limestone cave 特殊溶洞処理 返回 limestone cave