Monoid
[計] 獨異點; 類群
??? 情景例句
How many days will it take for my mail to reach its destination?
我的信件到達目的地要用幾天？
Missing school to watch the football match is out of the question.
為看足球賽而曠課，那可不行。
To tell you the truth,Mrs. Bird,I don't like chicken either!
說老實話，伯德夫人，我也不喜歡雞。