... solitude n.孤独，寂寞 pot-holer n.洞穴探险者 rambler n.漫步者，散步者 ...
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pot-holer r 洞穴探险者
同义词： potholer spelunker speleologist spelaeologist
以上来源于: WordNet
N-COUNT A potholer is someone who goes into underground caves and tunnels as a leisure activity. 下潜洞穴者 [英国英语]
Precautions of this sort are necessary, FOR it is impossible to FORetell the exact nature of the difficulties which will confront the pot-holer.
做出这样的准备是必要的，因为无法预见到洞穴探险者究竟会遇到什么性质的困难。
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