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
A little further to the right, Tom.
再往右一点， Tom。
Sometimes pastry can taste too sweet.
油酥点心往往太甜了。
He did not look up from his desk when I entered.
我进去的时候，他连头也没抬。