Efd
abbr. electro fluid dynamics 電流體動力學(xué); excused from duty 免除責任
??? 情景例句
I enjoyed lunch, Susan.
這頓午餐真好， Susan。
What is thelargest industrial center in this country?
這個國家最大的工業(yè)區(qū)是哪里？
He said that there was now no village.
他說那村子已經(jīng)沒有了。