Bcc
[計] 塊校驗字符, 盲目抄送
??? 情景例句
I enjoy writing.
我喜歡寫作。
Don't whistle until you are out of the wood.
沒有脫離險境，不要過早高興。
Is that all? It seems worse than a cold.
僅此嗎？看似比感冒重吧。