Triff
[计] 定价表
🗣️ 情景例句
Dad, Richard--Alexandra's here.
爸爸 Richard Alexandra来了。
How long does it take for a letter to get to California ?
一封信到加利福尼亚要花多长时间？
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。