2022年2月19日
border, boundary
摘要： The boundary of an area of land is an imaginary line that separates it from other areas. The Mississippi River [密西西比河] forms a natural boundary betwee 阅读全文
posted @ 2022-02-19 00:13 华容道专家 阅读(137) 评论(0) 推荐(0)