Sonal
a. 聲速的, 聲音的
??? 情景例句
Are you the oldest in your family?
你是你家里最大的孩子嗎？
He always takes pride in his work.He's very efficient.
他總是以他的工作而自豪，他是非常能干的。
It seems she was in class on Friday afternoon, but no one has seen her since.
好象她星期五還在教室，但從那以后沒人看見過她。