bicycleKK [ˋbaɪsɪkəl] /ˈbaɪsɪkəl/發音bi- 二、雙+cycle 圓、輪→兩個輪子展開收合bi-字首二、雙cycle字根圓、輪字面：兩個輪子兩個輪子的車 → 腳踏車。名詞1腳踏車、自行車、單車She rides her bicycle to work every morning.她每天早上騎腳踏車去上班。動詞1騎腳踏車較正式They bicycled along the river for nearly three hours.他們沿著河騎腳踏車騎了將近三個小時。