Keystone correction
[电] 梯形校正
🧩 词语组成解析
keystone
[['ki:stəun]]
n. 拱顶石, 楔石, 重点
🗣️ 情景例句
using as many letters as possible.
尽可能多用字母，
A good tale is none the worse for being twice told.
好故事百听不厌。
and that fool, Horst, aimed a fire extinguisher at me.
但那个傻瓜霍斯特把灭火器对准了我。