Seo
abbr. 搜索引擎优化（Search Engine Optimization）
🗣️ 情景例句
Well, then why are you so sad?
那你为什么如此难过？
The water that bears the boat is the same that swallows it up.
水能载舟，也能覆舟。
There were no classes this afternoon. My classmates all went to People's Park.
今天下午没有课。同学们都到人民公园去了。