单词学习：winder 名词
winder
/ˈwaɪndər/
n. 卷绕者；卷绕机；发条钥匙；螺旋形楼梯
The old clock's winder was missing, so Ms. Gu had to carefully turn the mechanism with a small key she found.
那个旧钟的发条钥匙不见了，所以顾老师不得不用她找到的一把小钥匙小心地转动机械装置。
单词卡片
卡片已就绪
