R.b.c.
[医] 红细胞(旧名红血球)
🗣️ 情景例句
Could you please say it again?
你能重复一下吗？
None so blind as those who won't see.
最瞎莫如视而不见。
Later we learnt that there was a very important person on board.
后来我们才得知，飞机上坐了一位非常重要的人物。