“subterranean tunnel”的概念、定义、翻译、参考文献-科学参考

单词	subterranean tunnel
释义	subterranean tunnel 地下隧洞
随便看	pitch follow-up system pitch-fork pitch ga(u)ge pitch gear pitch gyroscope pitch helix pitch indicator pitching pitching anticline pitching axis pitching fold pitching-in pitching machine pitching model pitching moment pitching motion pitching period pitching pile pitching syncline pitching tool pitch instrument pitch interval pitch lap pitch line pitch-line speed

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