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
The checkout counters are very busy.
收款台都很忙。
Virtue flies from the heart of a mercenary man.
唯利是图者，胸中无美德。
This made the driver following her brake hard.
她这一停使得跟在后头的司机也来个急刹车。