Underpinnings
(underpinning 的复数) n. 基础材料, 支承结构
🗣️ 情景例句
I really feel bad about it.
我真的感到很内疚。
May I take your message?
你需要留言吗？
Why do you keep asking me the same question?
你怎么又问我同样的问题？