Derailleur
n. <法>(自行车)变速器, 装有变速器的自行车
🗣️ 情景例句
The children's performances brought down the house.
孩子们的演出博得满场喝彩。
Affectionate mother.
满怀慈爱的母亲。
In his youth, his father and grandfather often told him stories about their family history.
年轻时，他的父亲和祖父常常同他说起他们的家史。