Boundary point
[计] 边界点
🧩 词语组成解析
🗣️ 情景例句
He told me
他告诉我
Not only did he make a promise, but he also kept it.
他不仅许下诺言，而且遵守了。
since ground stations and satellites cannot see everywhere.
因为地面工作站和卫星不可能看到地球上的每一个地方。