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
Oh, I'd like you to meet my sister-in-law Marilyn.
噢 我来向你介绍我嫂子Marilyn。
Mike likes to write by the nice bright light at night.
麦克喜欢在夜晚明亮的灯光旁写作。[八次疯狂张嘴，元音极其饱满！]
Good.now we can go ahead and write up the order.
好极了，现在我们可以准备下单了。