单词	纵向刻槽
释义	纵向刻槽 longitudinal grooving
随便看	underground sewage disposal system underground sewer underground shaft underground share underground shelter underground shield tunnel underground shop underground shopping underground shopping center underground shopping mails underground shopping mall underground shopping streets underground shove underground shovel underground sighting vane underground silo underground silo-enclosed bin underground silos underground sleeping therapy underground snack Underground Society under-ground society underground solving of mineral deposits underground space Under Ground Space