相关单词同义词accidentally, precipitously, 近义词 suddenly 突然地, headlong 头向前的, out of the blue 出乎意料地, all of a sudden 突然, surprisingly 惊人地, all at once 同时, circumstantially 因情形地, by chance 偶然, accidentally 偶然地临近词unexpected, unexpected state, unexpected crime, unexpected error, unexpected event, unexpected events, unexpected symbol, unexpected defeat, unexpected attack, unexpected errors, unexpected result 返回 unexpectedly