像"Mr","Mrs","Ms"這些稱呼，現在多不在其後加一個"full stop"的了，這是英國人多
數採用的慣例。美國人則要保守一點，多寫"Mr.","Mrs."和"Ms."。

People in the British English tradition usually write "Mr", "Mrs", "Ms",
etc. People using American English usually write "Mr.", "Mrs.", "Ms.", etc.