骤然

The news of plummeting stock prices dismayed speculators.

股票价格骤然下息使股民大为失望。

It is pretended, that I am retarding the cause of emancipation, by the coarseness of my invective, and the precipitancy of my measures.

有人说，我采取粗俗漫骂言辞和骤然激烈手段，在这场解放业中不是装腔作势而已。