Derailleur
n. <法>(自行车)变速器, 装有变速器的自行车
🗣️ 情景例句
You get one point for each letter,
一个字母可得一分。
Knowledge advances by steps and not by leaps.
知识只能循序渐进，不能跃进。
But Mr. Green says: It is better to give than to receive.
“给予比接受好。”