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
and I have a production meeting at four.
我四点钟有个生产会议。
She's engaged married to John.
她和约翰订婚 结婚了。
Many of the stars cannot be seen because they are too far away.
许多星星我们之所以看不见，是因为它们离我们太远。