Underbuild
v. 建筑在...的下面, 加强...的基础
🗣️ 情景例句
Yeah. My new advanced exercise class.
对， 新的高级健身班。
San Diego. I got back yesterday.
圣地亚哥，我昨天才回来。
Is there anything else I can do for you?
还有什么事我可以帮忙吗？