Keys
n. 關鍵幀；（鋼琴等的）鍵；密鑰（key的復數）
??? 情景例句
He couldn't teach such dull children.
他教不了這么笨的孩子。
Happy is he that is happy in his children.
對自己孩子感到高興的，才是幸福的人。
You should have a mind of your own.
你必須有自己的主見。