Lewis structure
[化] 路易斯结构
🧩 词语组成解析
n. 吊楔
🗣️ 情景例句
There are, Ellen.
一定有， Ellen。
Help the dog over the stile.
助人度过难关。
After the funeral, Joe and Bob revealed a secret which they had kept for over fifty years.
葬礼之后，乔和鲍勃透露了他们保守了长达50多年的秘密。