Derailleur
n. <法>(自行车)变速器, 装有变速器的自行车
🗣️ 情景例句
What's the third thing?
第三件事情是什么？
Tell me, is it a boy?
喂，你是男孩吗？
Doctor, I'm not feeling well, she said. I often feel tired.
“医生，我感到不舒服，”她说，“我经常感到疲倦”。