释义
n. 隧道,地下道 v. 挖隧道
例句
1. Moles make underground tunnels. 鼹鼠常打地洞。 2. Suddenly the train roared into a tunnel and everything was black. 突然火车轰隆隆地驶入一个隧道，四周的一切都漆黑一团。