They reacted violently to the news.他们对这条新闻反应强烈。

She reacted against the mindlessness and luxury of their lives.她对他们生活的盲目和奢侈很反对。

These two gases react to produce carbon dioxide and water.这两种气体发生化学反应, 产生二氧化碳和水。

Calcium reacts with water.钙和水会发生化学反应。