详细解释:n. 隧道, 地下道
vi. 挖隧道
vt. 掘隧道于
【医】 隧道
词型变化：
名词:tunneler动词过去式:tunneled,tunnelled过去分词:tunneled,tunnelled现在分词:tunneling,tunnelling第三人称单数:tunnels,tunnels英语解释：
名词 tunnel:
a passageway through or under something, usually underground (especially one for trains or cars)a hole in the ground made by an animal for shelter同义词：burrow