ヒアリングの練習問題a-2349

0:27 he charges $100 for a chukudu. it's pretty hard work. the most difficult part is (3 words) so that the parts fit together.

A humble wooden scooter means survival | DW News

参考リンク
https://www.youtube.com/watch?v=2r4K_4WlNhM  佐野末四郎SANOMAGIC （走行編）　マホガニー木製自転車TOKYO URBAN LIFE2009 こちらの自転車は一台200万円也。