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
You have no right to blame him for his sexual preference.
你没有权力批评他的性取向。
Would you mind calling back sometime tomorrow?
你介意明天某时打电话回来吗？
I am a new student.My name's Robert.
我是个新学生，我的名字叫罗伯特。