Taivo A Taiwan Mandarin dictionary

suì

ㄙㄨㄟˋ

  1. 1tunnel
  2. 2underground passage
Example

日本最長的隧道在哪裡?

Rìběn zuì cháng de suìdào zài nǎlǐ

Where is the longest tunnel in Japan?

Keep and it comes back until you know it.

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