英语词汇“pioneer tunnel”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	pioneer tunnel
释义	pioneer tunnel noun or pioneer bore : a small tunnel parallel to a main tunnel and well in advance of the completed main tunnel so that by crosscuts to the line of the main tunnel several headings can be exposed and work expedited
随便看	en-tout-cas entozoa entozoal entozoan entozoic entozoon entr'acte entrada entrail entrain entrainer entrainment entrainment entrammel entrance entrance entrance cone entrancement entrance path entrance pupil entranceway entrancing entrancingly entrant entrap

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