Reversing key
[电] 换向电键
🧩 词语组成解析
a. 回动的\\n[化] 换向
key
[kiː]
n. 钥匙;（打字机等的）键;关键，线索，秘诀;（音乐的）调;
vt. 键入;锁上;调节…的音调;提供线索;
vi. 使用钥匙;
adj. 关键的;主要的;
🗣️ 情景例句
You are a walking dictionary.
你是活字典。
I haven't seen you for ages.
好久没见了。
Three quarters of the world's books and newspapers are written in English.
3/4的书籍和报纸是用英语写的。