Derodidymus
[医] 双头畸胎
🗣️ 情景例句
I know it well.
我对它熟得很。
It is better to be safe than sorry.
事后追悔不如事前稳妥。
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。