Keystone effect
[电] 梯形效应
🧩 词语组成解析
keystone
[['ki:stəun]]
n. 拱顶石, 楔石, 重点
🗣️ 情景例句
I am looking forward to seeing you.
我正盼望能见到你
Custom is a second nature.
习惯是第二天性。
I think I can trust you, especially after what my son has told me.
我想我能够信任你，特别是在我儿子把情况告诉我以后。