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
Dad and I were planning to go to the game,
爸爸本来要和我一起去，
That woman is very creative; she weaves her own cloth.
那位女士非常有创作欲，她自己织布。
it is quite reasonable to regard the sea floor as the basic form of the crust of the earth,
因此完全有理由把海床看作地壳的基本模壳，