探たん偵てい団だん

noun

detective team; detective squad

A group formed to investigate something, often used in fiction (e.g., 少年探偵団).

• 少しょう年ねん探たん偵てい団だんが事じ件けんの謎なぞを解といた。

  The boy detective team solved the mystery of the case.

noun

study group; club

A group formed to research or study something together, often with a playful or informal tone.

• 夏なつ休やすみに歴れき史し探たん偵てい団だんを作つくって、地じ元もとの史し跡せきを調しらべた。

  We formed a history study group during summer vacation and investigated local historical sites.