"subterranean passages"
同义词: subterraneous
"subterranean motives for murder"
同义词: subterraneous ulterior
以上来源于: WordNet
ADJ A subterranean river or tunnel is under the ground. 地下的 [正式]
The city has 9 miles of such subterranean passages.
这座城市有9英里这样的地下通道。
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