Read Edit View history 隧道 suìdào HSK7 tunnel Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 隧道 · suìdào · tunnel 2026/03/04 隧道 suìdào tunnel tunnel 火车正穿过一条长长的隧道。 noun created sense Mar 4, 2026, 02:25 AM