sentry box洞: hole; cavity岩壁: crag; curtain; iwakabe; rock wall; the rock face岩壁梁: concrete ledge顶壁洞穴: joint pocket系缆壁洞: bollard niche; bollard recess下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:岩壁洞，即可在微信中查询翻译
