face on的用法和樣例：
例句
- I had to put my best face on before my boss although I didn't like him totally.
儘管我不喜歡我的老闆，但我不得不在面前是裝出十分須從的樣子。 - The little girl fell face on into the water.
那個小女孩面朝下落入水中。 - Seeing no change of escape, he put a bold face on the matter and walked directly to me.
他見逃不掉了，便裝出一幅對這件事滿不在乎的樣子，徑直朝我走來。 - Her exam results were disappointing but she tried to put a brave face on it.
她的考試成績令人失望，但卻裝出若無其事的樣子。
