Sigmatism
s發音困難
??? 情景例句
Welcome to the South Street restaurant, folks.
歡迎光臨南街餐館， 各位。
Please excuse me for a little while.I want to do something.
請等我一會兒時間，我要做點事。
It would strike twelve in twenty minutes' time.
再過20分鐘，大鐘將敲響12下。