at first 的意思是“起初”“開始”,它主要用於強調前後對照,暗示接下去的動作與前面的動作不同甚至相反,因此常有 but, afterwards, soon, at last 等相呼應。at first 英[?t f?:st] 美[?t f?st] at first
[詞典] 起初,當初;
[例句]At first they all thought I was a loony.
壹開始他們都以為我是個瘋子。