窗口將在 5秒后自動關閉.
ad.
我無意中遇到她。
反義:
ad.「偶然地;意外地」的反義字
以上來源於:《英漢大辭典》
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單選題
I dropped my smartphone __ when I was trying to answer a phone call; if I had been more careful, I wouldn't have to spend NT$5,000 on the repair now.
(A) sorrowfully
(B) accidentally
(C) accurately
(D) leisurely