1.自以为无所不知的人；自以为是的人a person who is annoying because they are very confident and think they know a lot
Grail actual movements often beyond most people expected, "wiseacre prediction grail top and bottom is foolish. "
大盘的实际走势往往超乎大多数人的预期，“自作聪明预测大盘的顶和底是愚蠢的”。
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