Understructure
n. 基础, 下层结构
🗣️ 情景例句
Western countries have evry strict visa requirements.
在西方国家有严格的签证要求。
I envy you.
我羡慕你。
Li Lei went into the school and found Miss Zhao in the school library.
李垒走进学校，在学校图书馆里找到赵小姐。