Dorsa
pl. 背, 背状部分, 背部\\n[医] 背
🗣️ 情景例句
Yes, I'm sure I can.
是的，当然可以。
Did you have a good flight?
你旅途愉快吗？
As a reasonable guess, they might, on an average, be 100 light years away.
据合理推算，外星人离我们平均距离也有100光年之远